Revolution-Green http://revolution-green.com Alternative Energy News Fri, 18 Aug 2017 07:19:18 +0000 en-US hourly 1 https://wordpress.org/?v=4.8.1 Parked electric cars are earning money http://revolution-green.com/parked-electric-cars-earning-money/ http://revolution-green.com/parked-electric-cars-earning-money/#respond Fri, 18 Aug 2017 07:19:18 +0000 http://revolution-green.com/?p=16500 Using electric vehicles to balance the grid can earn good money for the owners.  A year-long trial in Denmark is showing that utilities can use parked electric vehicles (EVs) as spare batteries, and those EVs can earn quite a bit of money for their owners from the utilities.   In an interview with Bloomberg New Energy […]

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Using electric vehicles to balance the grid can earn good money for the owners. 

A year-long trial in Denmark is showing that utilities can use parked electric vehicles (EVs) as spare batteries, and those EVs can earn quite a bit of money for their owners from the utilities.

 

In an interview with Bloomberg New Energy Finance, Nissan Europe’s director of energy services, Francisco Carranza, said that a fleet of 10 Nissan e-NV200 vans has earned €1,300 ($1,530) over the year.

Small amounts of power are necessary to regulate current frequency

Electricity grids around the world are facing an era of rapid change as more electric vehicles hit the road and as grid supply changes. For grid managers, sometimes small amounts of power are necessary to regulate current frequency and keep the grid working. At the same time, if a lot of electric vehicles draw power from the grid concurrently (for example, when they’re parked at home at night, or when they’re parked at work during the day), that threatens to change how grid operators plan to meet demand, as well.

Researchers and grid managers have theorized that vehicle-to-grid connections could help solve some of these problems. By installing two-way connections where an EV could charge its battery and send power back to the grid when it’s needed, an electric car battery increases its value and makes electricity infrastructure more stable.

Research has been done on vehicle-to-grid connections for years. In 2010, East Coast grid manager PJM worked with the University of Delaware to test communication control and logic between an electric vehicle and a grid. More recently, Ford and GM have tried similar tests, working especially to synchronize charge and discharge cycles so that the owner of the EV always has enough juice to get in the car and go when necessary.

The latest Danish trial was started last August as a project between Japanese automaker Nissan and the Italian energy company Enel. Essentially, 10 Nissan e-NV200 vans were hooked to a two-way grid connection during the day on the lot of the Danish utility Frederiksberg Forsyning (much like the GM trial mentioned above, utility employees were the beneficiaries of the trial here). The two-way grid connection would allow the cars to draw electricity when their batteries are low and send electricity back to the grid if necessary.

The total capacity of the Nissan fleet when they’re all connected to chargers is 10kW. The platform that the chargers use to intelligently send power between the grid and the cars, incidentally, was provided by a California company called Nuvve, which commercialized technology that was developed by the University of Delaware.

Although vehicle-to-grid systems are in their infancy and real results won’t be achieved until large numbers of EVs are connected to grids, trial runs need to start happening now. “If you [blindly] deploy in the market a massive number of electric cars without any visibility or control over the way they impact the electricity grid, you might create new problems,” Carranza told Bloomberg New Energy Finance.

Reference: https://arstechnica.com/cars/2017/08/parked-electric-cars-are-earning-money-balancing-the-grid-in-denmark/

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Solar panels innovation reduces the need for battery storage http://revolution-green.com/solar-panels-innovation-reduces-need-battery-storage/ http://revolution-green.com/solar-panels-innovation-reduces-need-battery-storage/#respond Fri, 18 Aug 2017 06:03:03 +0000 http://revolution-green.com/?p=16496 This simple management system helps many people maximize the use of grid connected solar and reduce the need for batteries. This is a great story from Australia. By Kathryn Diss Energy from your solar panels could give you hot water around the clock without the need to buy an expensive battery storage unit. That concept is […]

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This simple management system helps many people maximize the use of grid connected solar and reduce the need for batteries.
This is a great story from Australia.

By Kathryn Diss

Energy from your solar panels could give you hot water around the clock without the need to buy an expensive battery storage unit.

That concept is already a reality, with cost-cutting energy devices which leverage the power of “big data” helping households get more out of their solar panels by effectively using their hot water system as a battery.

The solar energy diverting device diverts excess power to hot water systems. Credit: Leticia Jukes

Big Data

Now, rapid advances in the technology have made that system far more efficient, and are allowing homeowners to save much more.One of the biggest gripes for solar panel owners is they typically only use around half of the energy they produce before it is exported back to the electricity grid.

Households are paid a tariff for the power they export to the grid — but that fee has been dramatically scaled back in recent years, providing further incentive for householders to want to use as much of the power they generate themselves as possible.

Expensive battery systems were touted as the only option to secure more power, but high-tech monitoring devices can provide households with a cheaper option.

The devices, which cost around $790, utilise “big data”, which is the collection of extremely large data sets that are computer-analysed to reveal patterns and trends.

It is what allows people to do things like stream music, look up GPS directions and post pictures online. But it is also helping consumers cut their power bills.

“Big data allows households to optimise their energy use and allows people to have more control of what electricity they use from the solar panels,” Curtin University sustainability expert Dev Tayal said.

“As electricity prices rise and as some of the more generous rebates and feed-in tariffs wind back, we’re only going to see an increased uptake of smart intelligent devices.”

Family’s bills cut by $180

The Jukes family were early adopters and are learning how big data works in the real world at their house in central Queensland.

The household of six are trialling a new device called Paladin, designed to make sure 95 per cent of their solar power is used in their home and not sent to the grid. “I have quite a large family, I have four children and and my husband so our power bills were quite large,” Leticia Jukes said. “Since we’ve had the Paladin put in it has further reduced our bill by another $180 per quarter, so big savings for a big family.”

The device gathers huge amounts of data by monitoring the electricity network, the hot water temperature and their home’s energy demands 3,600 times a second.It then diverts excess solar power to the hot water system, which is one of the most power-hungry appliances for households, accounting for up to 40 per cent of usage and usually run by expensive grid power at night.

Any surplus energy is then fed back into the grid. “The idea is to keep the hot water topped up to the max during the day so there will be enough hot water to see you through the night, and then as soon as first sunlight comes up, Paladin will go to work and start reheating your hot water,” Paladin Solar Australia director Mark Robinson said.

The system has been successfully trialed in New Zealand, but Paladin Solar saw potential in Australia with rising power prices and falling feed-in tariffs. “It can divert — in a 50th of a second — power back to the hot water system watt for watt, it does not need to wait for the solar to match the size of the hot water element,” he said.

“Other products were doing a similar thing but weren’t turning the hot water element off so then all of a sudden power was being drawn from the grid, and that’s just defeating the whole exercise, whereas Paladin is monitoring both ways,” he said.

The device also diverts energy to charge an electric car or heat a pool.

Customer demands predicted

Energy utilities have started leveraging its power to better predict customer demands, breaking away from the traditional method of using a rule of thumb or average to estimate needs.

“That average was always conservative because the last thing they (utilities) want to do is supply a customer and then not be able to meet their demand, so quite often networks have been overbuilt and customers overcharged,” energy consultant David Martin said.

Two Western Power employees stand beside a big TV screen looking at graphs.

 

“But now with a greater reliance on more specific and more accurate data, the network connection can be made to fit.”

Western Power has worked hard to keep pace with rapid technology advances, installing smart monitoring devices to gather large data sets on consumer demands.

“In the past you got a read of a meter once a month, now you’ve got a read a day, you’ve got a read at intervals during the day,” Western Power CEO Guy Chalkley said.

Cutting costs for businesses by as much as to 90 per cent

That information has helped the utility create its own software, cutting costs for businesses by as much as to 90 per cent.

“It is the first time we’ve been able to use this sort of data to this extent for this amount of accuracy,” Mr Chalkley said. “We’ve certainly got connections that would have cost $50,000 that could be as low as $5,000 now, so it’s a massive boost from an economy perspective.

Sweetlips fish and chip restaurant owner Michael Waldock welcomed the innovation, having spent many thousands of dollars connecting and upgrading grid connections at his three stores.”It could be tens of thousands of dollars depending on where your location is and what infrastructure you need,” he said.”If they can gauge that more accurately and only have to build what we have to build, that would be fantastic.”

Reference

http://www.abc.net.au/news/2017-08-06/big-data-devices-get-more-free-energy-from-sun/8774584

 

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What Happens When You Feed Spiders Graphene? Their Silk Gets Crazy Strong http://revolution-green.com/happens-feed-spiders-graphene-silk-gets-crazy-strong/ http://revolution-green.com/happens-feed-spiders-graphene-silk-gets-crazy-strong/#comments Thu, 17 Aug 2017 20:08:53 +0000 http://revolution-green.com/?p=16489 What Happens When You Feed Spiders Graphene? Their Silk Gets Crazy Strong - Revolution-Green
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Editors Note:  I wonder what would happen if humans ate nano sized particles of Graphene? –  Agcat

Spiders – Graphene -“ Spider Silk – You are what you eat.” Everybody knows that saying. Well, it goes for spiders, too. At the University of Trento in Italy, a team of researchers led by Professor Nicola Pugno has developed stronger spider silk by feeding spiders a diet of the 2D wonder material graphene. The nanomaterial-laced silk is up to three times the strength and 10 times the toughness of the silk the spiders produce in the wild.

“For this study, we created a solution of water and nanomaterials, carbon nanotubes, and graphene,” Pugno told Digital Trends. “We then sprayed this solution into a box of spiders, where it would likely be ingested. When the spiders spin their webs, we saw that the silk contained the nanomaterials. When we tested this silk with a nano-tensile testing machine, we found that it was stronger and tougher than regular silk.” The silk produced as part of the study has a fracture strength up to 5.4 gigapascals, and a toughness modulus up to 1,570 joules per gram. By comparison, regular spider silk has a failure strength of around 1.5 gigapascals, and a toughness modulus of just 150 joules per gram.

                                                                                    

pider silk is of interest to engineers and material scientists because of its unique properties — including strength that’s equivalent to steel, toughness that’s superior to Kevlar, and an impressive amount of flexibility. Other varied spider-silk-based projects we’ve covered recently include extreme shock-absorbing spider silk, and the use of it as a biomedical material in repairing extensive nerve injuries. In the case of Pugno’s research, it’s too early to talk specific use cases, although strengthened spider silk would likely be greatly appreciated by researchers working on a broad range of applications.

graphene

                                   Yegor Larin/123RF

Pugno said that he was not surprised by the findings of the experiment, since previous studies have shown that diet can play a role in the properties of silk. This has been most widely studied among silkworms, most notably in a 2013 study that found silkworms fed on mulberry leaves that had been sprayed with fabric dyes went on to produce colored silk.

Credit: Luke Dormehl Digital Trends august 16 2017

A paper describing the research was recently published in the academic journal 2D Materials.

 

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Electric Car Chargers to Outnumber Gas Stations in Great Britain Within 3 Years http://revolution-green.com/electric-car-chargers-outnumber-gas-stations-great-britain-within-3-years/ http://revolution-green.com/electric-car-chargers-outnumber-gas-stations-great-britain-within-3-years/#comments Thu, 17 Aug 2017 18:02:57 +0000 http://revolution-green.com/?p=16485 According to Nissan there will be more electric car charging stations than fuel stations by 2020 in the UK I am sitting in my hotel in China overlooking a bank of Tesla Charging stations and drooling over the Tesla’s topping up. I thought I would do some homework how the roll out was going in […]

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According to Nissan there will be more electric car charging stations than fuel stations by 2020 in the UK

I am sitting in my hotel in China overlooking a bank of Tesla Charging stations and drooling over the Tesla’s topping up. I thought I would do some homework how the roll out was going in other countries in regards to charging stations.The following from a press release from Nissan

Number of electric car charging locations to overtake petrol stations by August 2020. The UK has lost more than 75% of petrol stations in four decades, whilst electric charging points have gone from hundreds to thousands in just a few years.

The tipping point for mass EV uptake is upon us

Edward Jones, EV Manager, Nissan Motor (GB) Ltd., said; ‘We believe the tipping point for mass EV uptake is upon us.’ Nissan was the first manufacturer to introduce a mass-produced electric vehicle and has sold more EVs than any other car brand worldwide

At the end of 2015, there were just 8,472 fuel stations in the UK, down from 37,539 in 1970. Assuming a steady rate of decline, Nissan predicts that by August 2020 this will fall to under 7,870.*

In contrast, the number of public electric vehicle charging locations is expected to reach 7,900 by the same point in time. However, the accelerating adoption of electric vehicles means this crossover could happen a lot sooner.

Just over 100 years since the first fuel station opened – November 1919 at Aldermaston in Berkshire – the number in the UK has peaked, declined and is expected to be overtaken by charging stations designed for battery, not combustion, powered cars.

More than 75% of UK petrol stations have closed in the last 40 years, whilst the number of electric vehicle charging locations has increased from a few hundred in 2011 to more than 4,100 locations in 2016, as electric car sales take off.

According to Go Ultra Low, the joint government and car industry campaign, more than 115 electric cars were registered every day in the first quarter of 2016, equivalent to one every 13 minutes. The campaign also believes electric power could be the dominant form of propulsion for all new cars sold in the UK as early as 2027, with more than 1.3m electric cars registered each year.

Edward Jones, EV Manager, Nissan Motor (GB) Ltd., said; ‘As electric vehicle sales take off, the charging infrastructure is keeping pace and paving the way for convenient all-electric driving. Combine that with constant improvements in our battery performance and we believe the tipping point for mass EV uptake is upon us. As with similar breakthrough technologies, the adoption of electric vehicles should follow an ‘S-curve’ of demand. A gradual uptake from early adopters accelerates to a groundswell of consumers buying electric vehicles just as they would any other powertrain.’

Whilst the vast majority of electric vehicle owners charge at home, 98% of UK motorway services have charging stations, including rapid connectors that can charge a LEAF’s battery to 80% in just 30 minutes. The 30kWh Nissan LEAF, launched in January, delivers up to 155 miles on a single charge – a range that covers more than 90% of the average daily commuting requirements.

Amorphous silicon monoxide (SiO)

Nissan also recently announced the joint development of an atomic analysis methodology that uses amorphous silicon monoxide (SiO) to increase the energy density of its lithium-ion batteries. This development alone could increase the driving range of future Nissan electric vehicles by 150%.

Supply of fuel within the Capital is also becoming scarcer. Central London has nearly half as many petrol stations per car as the Scottish Highlands; only four remain within the congestion-charge zone**. A notable closure in 2008 was one of the country’s oldest forecourts, the Bloomsbury Service Station, which had been operational since 1926.

Nissan’s recent partnership with world-renowned architects Foster + Partners, provided a conceptual vision for the Fuel Station of the Future. The result isn’t a conventional forecourt at all, but a combination of Vehicle-to-grid, battery storage, wireless charging, autonomous drive technology and over-the-air connectivity all combining to revolutionise how energy is used and distributed across Europe’s major cities.

Nissan believes these technologies, run in tandem with all-electric vehicles, will play an increasingly important role in helping major cities like London reduce harmful emissions. It took just eight days for London to breach its annual pollution limits in 2016 with pollution levels reaching 3.5x the legal limit in some of the Capital’s black spots.

Reference

http://newsroom.nissan-europe.com/uk/en-gb/media/pressreleases/148556/more-electric-car-charging-stations-than-fuel-stations-by-2020

 

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Zinc-Air Batteries With 5x Capacity To Lead Charge Against Lithium-Ion http://revolution-green.com/zinc-air-batteries-5x-capacity-lead-charge-lithium-ion/ http://revolution-green.com/zinc-air-batteries-5x-capacity-lead-charge-lithium-ion/#respond Thu, 17 Aug 2017 17:48:07 +0000 http://revolution-green.com/?p=16482 Today, new advances in zinc-air batteries are making them look increasingly more viable as a suitable replacement, with the potential to squeeze five time the charge into a battery comparably sized to its lithium-ion counterpart. Cheaper to produce than lithium-ion batteries, The breakthrough comes from researchers working at University of Sydney and the Nanyang Technological […]

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Today, new advances in zinc-air batteries are making them look increasingly more viable as a suitable replacement, with the potential to squeeze five time the charge into a battery comparably sized to its lithium-ion counterpart.

Cheaper to produce than lithium-ion batteries,

The breakthrough comes from researchers working at University of Sydney and the Nanyang Technological University, who published a paper in Advanced Materials.

http://onlinelibrary.wiley.com/doi/10.1002/adma.201701410/full

As its name implies, zinc-air batteries are composed of zinc metal and oxygen from the air, which is of course readily available. This battery chemistry makes them much cheaper to produce than lithium-ion batteries, which could help to drive down the prices of everything from electronics to electric vehicles that are rising in popularity.

The new method uses a three-stage process that tosses expensive metal catalysts (i.e. platinum, iridium oxide) in favor or cheaper and more common alternatives like cobalt, nickel or iron. And with a more refined manufacturing process, the researchers were able to more intricately control the composition, size and crystallinity of these catalysts to build robust rechargeable zinc-air batteries.

In addition to the increase in battery capacity, there have been promising results with regards to battery efficacy, which has been shown to drop just 10 percent over the course of 60 charge/discharge cycles during a 120-hour period.

Abstract

Metal oxides of earth-abundant elements are promising electrocatalysts to overcome the sluggish oxygen evolution and oxygen reduction reaction (OER/ORR) in many electrochemical energy-conversion devices. However, it is difficult to control their catalytic activity precisely. Here, a general three-stage synthesis strategy is described to produce a family of hybrid materials comprising amorphous bimetallic oxide nanoparticles anchored on N-doped reduced graphene oxide with simultaneous control of nanoparticle elemental composition, size, and crystallinity. Amorphous Fe0.5Co0.5Ox is obtained from Prussian blue analog nanocrystals, showing excellent OER activity with a Tafel slope of 30.1 mV dec−1 and an overpotential of 257 mV for 10 mA cm−2 and superior ORR activity with a large limiting current density of −5.25 mA cm−2 at 0.6 V. A fabricated Zn–air battery delivers a specific capacity of 756 mA h gZn−1 (corresponding to an energy density of 904 W h kgZn−1), a peak power density of 86 mW cm−2 and can be cycled over 120 h at 10 mA cm−2. Other two amorphous bimetallic, Ni0.4Fe0.6Ox and Ni0.33Co0.67Ox, are also produced to demonstrate the general applicability of this method for synthesizing binary metal oxides with controllable structures as electrocatalysts for energy conversion.

 

Reference:

http://onlinelibrary.wiley.com/doi/10.1002/adma.201701410/full

 https://hothardware.com/news/zinc-air-batteries-5x-battery-capacity-lithium-ion#o2qSorqMsQ9CDXlS.99

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Researchers clarify mystery about proposed battery material http://revolution-green.com/researchers-clarify-mystery-proposed-battery-material/ http://revolution-green.com/researchers-clarify-mystery-proposed-battery-material/#respond Thu, 17 Aug 2017 17:30:12 +0000 http://revolution-green.com/?p=16479 Battery researchers agree that one of the most promising possibilities for future battery technology is the lithium-air (or lithium-oxygen) battery, which could provide three times as much power for a given weight as today’s leading technology, lithium-ion batteries. But tests of various approaches to creating such batteries have produced conflicting and confusing results, as well […]

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Battery researchers agree that one of the most promising possibilities for future battery technology is the lithium-air (or lithium-oxygen) battery, which could provide three times as much power for a given weight as today’s leading technology, lithium-ion batteries. But tests of various approaches to creating such batteries have produced conflicting and confusing results, as well as controversies over how to explain them.

This series of photographs shows the chemical reaction that occurs during the charging of a lithium oxygen battery using lithium iodide as an additive. Credit: Jose-Luis Olivares/MIT

Lithium iodide (LiI)

Now, a team at MIT has carried out detailed tests that seem to resolve the questions surrounding one promising material for such batteries: a compound called lithium iodide (LiI). The compound was seen as a possible solution to some of the lithium-air battery’s problems, including an inability to sustain many charging-discharging cycles, but conflicting findings had raised questions about the material’s usefulness for this task. The new study explains these discrepancies, and although it suggests that the material might not be suitable after all, the work provides guidance for efforts to overcome LiI’s drawbacks or find alternative materials.

The new results appear in the journal Energy and Environmental Science, in a paper by Yang Shao-Horn, MIT’s W.M. Keck Professor of Energy; Paula Hammond, the David H. Koch Professor in Engineering and head of the Department of Chemical Engineering; Michal Tulodziecki, a recent MIT postdoc at the Research Laboraotory of Electronics; Graham Leverick, an MIT graduate student; Yu Katayama, a visiting student; and three others.

The promise of the lithium-air battery comes from the fact one of the two electrodes, which are usually made of metal or metal oxides, is replaced with air that flows in and out of the battery; a weightless substance is thus substituted for one of the heavy components. The other electrode in such batteries would be pure metallic lithium, a lightweight element.

But that theoretical promise has been limited in practice because of three issues: the need for high voltages for charging, a low efficiency with regard to getting back the amount of energy put in, and low cycle lifetimes, which result from instability in the battery’s oxygen electrode. Researchers have proposed adding lithium iodide in the electrolyte as a way of addressing these problems. But published results have been contradictory, with some studies finding the LiI does improve the cycling life, “while others show that the presence of LiI leads to irreversible reactions and poor battery cycling,” Shao-Horn says.

Previously, “most of the research was focused on organics” to make lithium-air batteries feasible, says Michal Tulodziecki, the paper’s lead author. But most of these organic compounds are not stable, he says, “and that’s why there’s been a great focus on lithium iodide [an inorganic material], which some papers said helps the batteries achieve thousands of cycles. But others say no, it will damage the battery.” In this new study, he says, “we explored in detail how lithium iodide affects the process, with and without water,” a comparison which turned out to be significant.

The team looked at the role of LiI on lithium-air battery discharge, using a different approach from most other studies. One set of studies was conducted with the components outside of the battery, which allowed the researchers to zero in on one part of the reaction, while the other study was done in the battery, to help explain the overall process.

They then used ultraviolet and visible-light spectroscopy and other techniques to study the reactions that took place. Both of these processes foster the production of different lithium compound such as LiOH (lithium hydroxide) in the presence of both LiI and water, instead of Li2O2 (lithium peroxide). LiI can enhance water’s reactivity and make it lose protons more easily, which promotes the formation of LiOH in these batteries and interferes with the charging process. These observations show that finding ways to suppress these reactions could make compounds such as LiI work better.

This study could point the way toward selecting a different compound instead of LiI to perform its intended function of suppressing unwanted chemical reactions at the electrode surface, Leverick says, adding that this work demonstrates the importance of “looking at the detailed mechanism carefully.”

Shao-Horn says that the new findings “help get to the bottom of this existing controversy on the role of LiI on discharge. We believe this clarifies and brings together all these different points of view.”

But this work is just one step in a long process of trying to make lithium-air technology practical, the researchers say. “There’s so much to understand,” says Leverick, “so there’s not one paper that’s going to solve it. But we will make consistent progress.”

Assistance

The team also included recent MIT graduates Chibueze Amanchukwu PhD ’17 and David Kwabi PhD ’16, and Fanny Bardé of Toyota Motor Europe. The work was supported by Toyota Motor Europe and the Skoltech Center for Electrochemical Energy Storage, and used facilities supported by the National Science Foundation.

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New Ultrathin Semiconductor Materials Exceed Some Of Silicon’s Capabilities http://revolution-green.com/new-ultrathin-semiconductor-materials-exceed-silicons-capabilities/ http://revolution-green.com/new-ultrathin-semiconductor-materials-exceed-silicons-capabilities/#respond Tue, 15 Aug 2017 18:27:15 +0000 http://revolution-green.com/?p=16473 w Ultrathin Semiconductor Materials Exceed Some Of Silicon's Capabilities - Revolution-Green
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Editors Note;  Material Science, this is an area of great expenditures and it is yielding results. More will be revealed s the delve into the myriad of findings now being worked on – Agact

Credit: Brian Wang      August 13, 2017

Semiconductors  – Solicon – Selenides: Electrical engineers at Stanford have identified two semiconductors – hafnium diselenide and zirconium diselenide – that share or even exceed some of silicon’s desirable traits, starting with the fact that all three materials can “rust.” In this greatly enlarged cross-section of an experimental chip, the bands of black and white reveal alternating layers of hafnium diselenide – an ultrathin semiconductor material – and the hafnium dioxide insulator. The cross-section matches an overlaid color schematic on the right. (Image credit: Michal Mleczko) The new materials can also be shrunk to functional circuits just three atoms thick and they require less energy than silicon circuits.

 

The new materials can also be shrunk to functional circuits just three atoms thick and they require less energy than silicon circuits. Although still experimental, the researchers said the materials could be a step toward the kinds of thinner, more energy-efficient chips demanded by devices of the future.

Science Advances – HfSe2 and ZrSe2: Two-dimensional semiconductors with native high-κ oxides

Silicon’s strengths

Silicon has several qualities that have led it to become the bedrock of electronics, Pop explained. One is that it is blessed with a very good “native” insulator, silicon dioxide or, in plain English, silicon rust. Exposing silicon to oxygen during manufacturing gives chip-makers an easy way to isolate their circuitry. Other semiconductors do not “rust” into good insulators when exposed to oxygen, so they must be layered with additional insulators, a step that introduces engineering challenges. Both of the diselenides the Stanford group tested formed this elusive, yet high-quality insulating rust layer when exposed to oxygen.

 

Electrical engineers at Stanford have identified two semiconductors – hafnium diselenide and zirconium diselenide – that share or even exceed some of silicon’s desirable traits, starting with the fact that all three materials can “rust.”

 n this greatly enlarged cross-section of an experimental chip, the bands of black and white reveal alternating layers of hafnium diselenide – an ultrathin semiconductor material – and the hafnium dioxide insulator. The cross-section matches an overlaid color schematic on the right. (Image credit: Michal Mleczko)

Not only do both ultrathin semiconductors rust, they do so in a way that is even more desirable than silicon. They form what are called “high-K” insulators, which enable lower power operation than is possible with silicon and its silicon oxide insulator.

As the Stanford researchers started shrinking the diselenides to atomic thinness, they realized that these ultrathin semiconductors share another of silicon’s secret advantages: the energy needed to switch transistors on – a critical step in computing, called the band gap – is in a just-right range. Too low and the circuits leak and become unreliable. Too high and the chip takes too much energy to operate and becomes inefficient. Both materials were in the same optimal range as silicon.

All this and the diselenides can also be fashioned into circuits just three atoms thick, or about two-thirds of a nanometer, something silicon cannot do.

“Engineers have been unable to make silicon transistors thinner than about five nanometers, before the material properties begin to change in undesirable ways,” Pop said.

The combination of thinner circuits and desirable high-K insulation means that these ultrathin semiconductors could be made into transistors 10 times smaller than anything possible with silicon today.

“Silicon won’t go away. But for consumers this could mean much longer battery life and much more complex functionality if these semiconductors can be integrated with silicon,” Pop said.

More work to do

There is much work ahead. First, Mleczko and Pop must refine the electrical contacts between transistors on their ultrathin diselenide circuits. “These connections have always proved a challenge for any new semiconductor, and the difficulty becomes greater as we shrink circuits to the atomic scale,” Mleczko said.

They are also working to better control the oxidized insulators to ensure they remain as thin and stable as possible. Last, but not least, only when these things are in order will they begin to integrate with other materials and then to scale up to working wafers, complex circuits and, eventually, complete systems.

“There’s more research to do, but a new path to thinner, smaller circuits – and more energy-efficient electronics – is within reach,” Pop said.

Abstract
The success of silicon as a dominant semiconductor technology has been enabled by its moderate band gap (1.1 eV), permitting low-voltage operation at reduced leakage current, and the existence of SiO2 as a high-quality “native” insulator. In contrast, other mainstream semiconductors lack stable oxides and must rely on deposited insulators, presenting numerous compatibility challenges. We demonstrate that layered two-dimensional (2D) semiconductors HfSe2 and ZrSe2 have band gaps of 0.9 to 1.2 eV (bulk to monolayer) and technologically desirable “high-κ” native dielectrics HfO2 and ZrO2, respectively. We use spectroscopic and computational studies to elucidate their electronic band structure and then fabricate air-stable transistors down to three-layer thickness with careful processing and dielectric encapsulation. Electronic measurements reveal promising performance (on/off ratio over 1 million; on current, ~30 μA/μm), with native oxides reducing the effects of interfacial traps. These are the first 2D materials to demonstrate technologically relevant properties of silicon, in addition to unique compatibility with high-κ dielectrics, and scaling benefits from their atomically thin nature.

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Is the holy grail already here with the super-capacitor battery? http://revolution-green.com/holy-grail-already-super-capacitor-battery/ http://revolution-green.com/holy-grail-already-super-capacitor-battery/#comments Tue, 15 Aug 2017 16:46:44 +0000 http://revolution-green.com/?p=16463 We are blessed  with many readers that send some great links. If half of the following is true then hold on for the ride. Their super-capacitor battery Super Capacitor based energy storage module Breakthrough in energy density of 100Wh/kg Facilitate re-charging in just 16~30 seconds Functions optimally for 40+ years Safest temperature tolerance from -40C […]

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We are blessed  with many readers that send some great links. If half of the following is true then hold on for the ride.

Their super-capacitor battery

  • Super Capacitor based energy storage module
  • Breakthrough in energy density of 100Wh/kg
  • Facilitate re-charging in just 16~30 seconds
  • Functions optimally for 40+ years
  • Safest temperature tolerance from -40C to 80C
  • Round-trip efficiency of 99.121% with 1,000,000 cycles at 100% DoD

Their super-capacitor battery is an offshoot of WRL Technologies earlier project, a six kilowatt-hour battery that is portable and lightweight, which can be recharged for an impressive 16 seconds. This battery has allowed WRL Technologies to power an auto rickshaw (tuk-tuk), which ran for 150 kms with a full-load capacity of five people.

“It was a major achievement indeed and once we reached that milestone, we were able to look and solve other power issues that impact various segments, including the automobile industry,” he said. In addition, the company has also developed a retrofit kit, which would enable conventionally fuelled cars to be converted either as a hybrid or a fully electronic vehicle.

Tentatively scheduled to be launched in Dubai in the last quarter of 2017, the super-capacitor battery and the retrofit kit are expected to ?revolutionise the automobile industry, said Qureshi.

A growing awareness about green technology is fuelling WRL Technologies growth and Qureshi expects this to continue in the near future as more and more consumers recognize the value of renewable energy.
“WRL Technologies has expanded enormously over the past six years. Outside of the UAE, we now have presence in the U.S., China, Pakistan and South Africa. We plan to be present in eight additional countries,” he concludes.

The RICK-E

  • Runs on electric power
  • Zero emission of carbon
  • 60 km/h top speed
  • Noise pollution free
  • Full charge lasts 150 km
  • Charging time 16 to 30 seconds
  • Operable in knee high water

 

Past Achievements

Waseem Ashraf Qureshi is the rising sun in the solar-powered tech domain. He has ideas that are unique, interpretative and competitive when put to test. He not only has a brilliant scientific mind, but also the charms of a successful entrepreneur and dealmaker. He purports a simple vision: to help science go green, and do away with the energy crisis per se.

Qureshi is an electronics engineer, inventor and is gearing up to usher in a revolution in solar powered solutions. His first accomplishment was introducing UPS, a battery-based uninterrupted power supply system, in Pakistan in 1984 that transformed the landscape in an energy-starved country. A graduate from Lahore, Qureshi went on to win the presidential award for excellence at the tender age of 15. Since then, there has been no looking back for him in his industrious career.

He has been the brain behind companies such as WRL Technologies, Kilowatt Lab, Microtron Technologies, Q Technologies, Amber and Waseem General Trading LLC.  WRL Technologies is making strides as it offers innovative products and solutions to both the developed and developing countries in the realms of the energy sector.
Having moved to Dubai in 2009, Qureshi established MICCGreen Tec, and triumphed in his ambition to create technologies that are environment-friendly and cost-effective.

The international technology development company foresees a suitable alternative for energy solutions with a focus on solar energy. Headquartered in Washington D.C. (U.S.), it has research labs in Dubai and manufacturing facilities in Guangzhou (China).His core intention is to further sustainable technology in the solar sector, and is content to achieve that objective in the sunshine environs of the UAE.

He successfully developed a PV-based control and BOS standalone device, Monitored Inverter Converter and Charger (MICC), which is considered to be a new and innovative paradigm for PV based solar systems. The very concept of MICC is a breakthrough in itself. It eliminates shortcomings in existing methodologies, and economically generates and delivers solar power with or without the support of grid or other energy sources. The UAE currently has the largest installed base and is a resounding success.

A battery that can be charged in 16 to 30 seconds and features an extraordinary lifecycle

WRL Technologies is now proud to offer a new innovation in energy storage, known as Sirius, a battery that can be charged in 16 to 30 seconds and features an extraordinary lifecycle. He says small gadgets relating to solar energy were always there, but there was hardly any medium-scale technology for household, and other commercial avenues. This is where WRL Technologies steps in. With research laboratories in Dubai, Amber and Waseem General Trading designs and develops technologies, and then distributes it. “In the process of marketing our innovation, we get major shares for our production. We brand them with other concerns and collaborate with market icons in the technology realms,” Qureshi remarked.

10 times the power density and  an optimal lifespan  of 45 years

The proposed battery is set to stir in a revolution of sorts. Its ultra-capacitors are capable of more than . The technology is apt for e-mobility products as well as for consumer electronics. The most stunning aspect of this innovation is that its optimal lifespan is of 45 years. These ultra-capacitor battery systems do not degrade when completely discharged, overcharged or kept at 100 per cent capacity. This helps reduce the cost of recharging.
The solar-powered solutions of Kilowatt Lab are for home consumption, commercial, as well as industrial usages. The Green Tuk Tuk, as well as solar powered bikes and cars, water pumps and Peltier-based air conditioners are some of its iconic inventions

.
With accessible technology at an affordable cost, WRL Technologies plans to run potable energy trucks that could instantly help recharge solar-related gadgets and batteries. Comparable to gas cylinders that are delivered to homes, this concept will revolutionise the dissemination of solar energy to consumers across the board. Depending on usage, the storage capacity could last from 48 hours to a week or a month. The project will be on its wheels shortly.

Cost Effective

Qureshi says it is cost-effective and competitive with costs lower than that incurred by lithium batteries. The parameters are quite clear for WRL Technologies – gradually eliminate dependence on fossil fuels and let a new era of power generation from solar energy take root. According to him, around 5 to 7 per cent of the energy market in Pakistan alone will be based on solar by the year 2020. It is 50 per cent lower in cost compared to gas and 70 per cent lower than petrol. Moreover, wirelessly charged technology is also on the anvil, which will be another shot in the arm as the world turns greener day by day.

WRL Technologies shifts up a gear with electric car project

A number of innovative technologies by the firm are set to revolutionise the automobile industry

Clean technology company, WRL Technologies, is moving to the fast lane with its soon-to-be launched electric car initiative. CEO Waseem Ashraf Qureshi said their project is expected to solve a major pain point in this segment of the automobile industry by using WRL Technologies’s proprietary super-capacitor batteries, which can be recharged approximately the same length of time it takes to re-fuel conventional cars.

“Electric car manufacturers have been struggling to increase the energy storage in their vehicles, requiring electric car owners to park their car as much as six hours in order to fully charge them after reaching 200-300-kilometre (km) mileage,” Qureshi highlighted.

WRL Technologies, however, plans to take its electric car project one notch higher by developing means for motorists to recharge their electric cars wirelessly, without the need to stop at a recharging station. The proposal has received significant funding and wide support from investors in Silicon Valley and has enlisted major car manufacturing companies in China and the U.S. for its concept vehicles.

“Our partners and investors are confident about our green technology. The super-capacitor batteries are non-toxic, non-chemical and stores electricity in its original form, making it more efficient,” the CEO added.
Qureshi said they are planning to apply this wireless recharging concept to mobile phones using a specially designed battery that can be installed in various mobile devices.
“We’re planning to also launch this in Dubai, which is our hub, in late 2017.
It will be launched in certain hotspots like malls, giving consumers the opportunity to recharge their phones in just 15 seconds using this type of battery. The battery life can last between 10 and 20 hours, depending on the usage. The service will be available for a certain fee, which will then be deducted from the user’s available phone credit,” he explained.

While the project is still in its early stage, Qureshi is confident that it will eventually become a game changer in the region’s power mix. He added that the project guarantees that electricity used in the wireless recharging of smart devices will come from renewable sources.

Source:

http://www.microtrontec.com/

http://wrltech.com/#innovations

http://www.khaleejtimes.com/a-solar-inspired-visionary

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The XYT Electric Car: A temptation for Simon http://revolution-green.com/xyt-electric-car-temptation-simon/ http://revolution-green.com/xyt-electric-car-temptation-simon/#comments Mon, 14 Aug 2017 19:23:16 +0000 http://revolution-green.com/?p=16460 This French car is brilliant. It has only 580 parts (instead of 10,000 plus) and can be configured how you want. Because it built around modules you can update it without having to trade the whole care in. Its ugly but appealing…the French are masters at that. XYT — Simplifying EVs Aside from simplicity, what […]

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This French car is brilliant. It has only 580 parts (instead of 10,000 plus) and can be configured how you want. Because it built around modules you can update it without having to trade the whole care in. Its ugly but appealing…the French are masters at that.

XYT — Simplifying EVs

Aside from simplicity, what separates these cars from other cars is their modular and customisable design. Instead of the one-size-fits-all type of offering delivered by other manufacturers, the XYT gives the option of customizing and changing the vehicle based on your needs and desires. The cars are assembled locally by teams of professionals. Noting that the car has just 580 pieces may not say much to you, but this is compared to the usual 6,000 to 10,000 pieces that are used in a classic car design — that can give you an idea of how much of a difference this is.

If you’re thinking that this stripped back approach might compromise on safety, fear not, the vehicles have already passed all crash tests and are more than roadworthy.

The vision of XYT is to create vehicles that can be modernized over time to extend their lifespan. This kind of customisable, modular approach is already present in other technologies, so it will be intriguing to see how this plays out in the electric vehicle market over the long term. We have reached out to XYT to find out more information on the price, range, and availability of the vehicles, and we’ll update the article with more information as and when we have it.

Video 

 

Vision

  • We are convinced that the future of professional mobility rests on new areas of value creation.
    Modular, clean and mobile.
  • These new mobile spaces, useful even when they are stopped, will allow professionals to create new experiences for their clients
    and urban architects to reinvent public spaces.

Lets hope this one gets legs. For developing nations his is a perfect platform to get people started for local manufacturing and assembly.

Source

http://www.xyt.fr/

 

 

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Strong push towards Clean & Green Jeepneys in Philippines http://revolution-green.com/strong-push-towards-clean-green-jeepneys-philippines/ http://revolution-green.com/strong-push-towards-clean-green-jeepneys-philippines/#comments Mon, 14 Aug 2017 11:00:23 +0000 http://revolution-green.com/?p=16452 Finally some green solutions may be implemented in the Philippines

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Anybody who has ever visited the Philippines is no doubt familiar with Jeepneys. Once, after WWII,  the generally poor but creative and inventive Filipinos converted donated US military vehicles into what is now known as Jeepneys. Basic vehicles that provided basic transportation needs.

Toothpicks, cello tape and staples

As the population grew – over the years, quite dramatically – more and more Jeepneys appeared on the roads. At a certain point the military hardware, after decades of service was totally worn out and Jeepneys were constructed from surplus old Japanese diesel engines, and so forth. The Filipinos are also extremely creative when it comes to keeping things going, and if need be, they will do so using toothpicks, staples and cellotape. Indeed, many Jeepneys do look as if the only thing that is keeping the contraption together is the paint.

Others however are nearly works of art, with lots of colorful attributes, fake antennas, and whatnot, and so colorful one needs sunglasses to admire them. They do provide a very colorful and effective means of cheap transportation for everybody.

Congestion and pollution

Unfortunately, they are also responsible, according to many sources, for well over 95% of all traffic congestion, and, even worse, absolutely horrid pollution. No doubt the term “smoke belching” was invented here. The engines are completely open, unregulated, with (literally) breathtakingly ancient technology and adjusted to “run nicely” but certainly not tuned in any way to run cleanly too. Yes, there are “sort of” mandatory MOT checks, but in reality, most of it is a complete farce. On paper, much is very well regulated, but enforcement is in most cases minimal, or selective, or simply completely absent. The result, at least in major cities such as Manila is abject pollution, nearly round-the-clock total traffic gridlock – in other words the seemingly insurmountable problems so typical of many very large cities. The problem is often even made worse by a lack of maintenance and certainly also a lack of driver training. Many drivers, although able to drive “on the millimeter” seem to be little more than a crossbreed between John Rambo or Dhengis Khan and a turtle. The latter representative for the (lack of) speed, the former the way they routinely violate any and all traffic rules. Quite a unique accomplishment, actually: often agonizingly slow and still, at the same time, extremely dangerous and totally unpredictable. It is not unheard of to see a Jeepney on a 6-lane motorway make a U-turn crossing all lanes, causing instant chaos. Or simply stopping right there and then to pick up a passenger. Anything and everything is possible, traffic rules seem to be a mere suggestion.

A solution: electric Jeepneys

That this situation is no longer acceptable is crystal clear, even to politicians, and that’s saying something. The country desperately needed a solution: cheap mass transportation, causing limited or no pollution, and minimal needs for maintenance. And better driver training, obviously. A little enforcement of traffic rules wouldn’t hurt either.

Over the years, many proposals have come and gone. Some of them proposing the obvious: clean electric vehicles. Jeepneys generally cover very limited distances, some of them no more than 20 or 30 kilometers on a particular route, and then collect passengers for the ride back to the starting point. All this with numerous stops in between. In other words, lots of stop-and-go traffic, a situation a typical combustion engine is eminently unsuited for. Especially with the type of ancient surplus diesels that are generally used, most of which most likely came from the Ark of Noah. These engines are extremely inefficient, extremely polluting, and to top it all off, very prone to wear and tear – especially under stop-and-go conditions.

So the electric proposal was an obvious one. Unfortunately, not much came from it, mainly due to government corruption, incompetence, lack of funds, lack of project management experience, and perhaps a lack of willpower in certain circles.

Hope at the horizon?

All of that now stands a very good chance of finally changing for the better.

A young company (backed by next-generation sustainable technology and deep pockets) by the name of QEV Philippines Electromobility Solutions and Consulting Group Inc. is poised to change all that. QEV Philippines is a business unit of Singapore’s QEV Capital Pte. Ltd., and they recently launched its proposed “green” jeepney.

It will serve as a pilot for a business model it hopes will transform some 50,000 jeepneys over a five-year period, and possibly other types of vehicles. QEV Philippines is backed by one of the country’s wealthiest individuals, Endika Aboitiz, whose family runs power, banking and property conglomerate Aboitiz Equity Ventures Inc.

The initiative is a personal investment of Aboitiz, who partnered with Spanish businessman Enrique Bañuelos for this venture. QEV Philippines is also the main vehicle for Aboitiz’s goal to reinvent the iconic jeepney into a cleaner, quieter and more productive means of public transportation. And it can even keep it iconic charm.

The jeepney’s utilitarian, metallic aesthetic will remain largely untouched, since most of the transformation happens under the hood: QEV Philippines will swap diesel engines and fuel tanks with powerful lithium ion batteries and e-motors.

It will take around 15 minutes to fully charge QEV’s green jeepney, giving it a range of about 150 kilometers. Which is more than enough for most if not all of them: and the quick charging time is ideal as well. These vehicles could be used 24/7 this way. Obviously, all of the classic issues with (ancient) internal combustion engines go away instantly.

The conversion, pegged at a minimum of P500,000 (about US$ 10,000) per unit, is far less than acquiring a brand new electric jeepney – however, it is highly unlikely that any jeepney driver can shoulder that kind of investment. Aboitiz therefore proposes that this is where Government can – must – step in.

“What is key is government pays for the conversion. If not, it will take 100 years,” he said.

Aboitiz said it would be a form of conditional cash transfer (CCT) that would have environmental and economic benefits for passengers and drivers, since their earnings will go up as maintenance costs go down – which is absolutely true. In fact many estimate that running and maintenance costs would go down by P40,000 (US $1000) per jeepney per year. In the Philippines, that is a lot of money.

The company proposes to install 300 charging stations for E-jeepneys all over Manila, which would be sufficient charging infrastructure. It would save the sector 375 million liters of diesel fuel a year. Not just the environmental benefits are clear, so are the economic benefits, and that may be what makes it happen for real this time.

And not a moment too soon.

 

 

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