Liquid energy storage system for solar energy
BroadBit metallic sodium batteries

I think I am on battery overload. There are so many battery technologies close to commercialization that will make a huge paradigm shift in transport and how we generate and store electricity. The video at the end of this story is one of better ones I have seen which clearly illustrates the technology and its benefits. If the claims made are true, hold onto your seats for grid storage, solar storage and small transport solutions (scooters etc)

1 minute charging &1 0,000 cycles

URABat, an Ultrafast Rechargeable Aluminum Battery co-developed by ITRI and Stanford University. It is an an Ultrafast Rechargeable Aluminum Battery (URABat), said to be a safer and more efficient alternative to lithium-ion batteries. Developed in partnership with Stanford University, the URABat can be fully-charged in one minute for more than 10,000 cycles.

In terms of concept, the development of URABat has achieved three breakthroughs:

(1) discovery of the perfect combination of aluminum and graphite as the battery cell;

(2) the whole battery cell is as supple as paper, and can be mass produced for various demands and product attributes;

(3) the stability and durability which make the battery safe even if damaged by an external force.

10 times less expensive

In value differentiation, URABat has better specific power density, lower cost per usage, and much longer life than lithium or lead acid batteries. URABat is the first electrochemical device capable of achieving a storage cost lower than a quarter of the cost of renewable electricity itself, while lithium or lead acid batteries are ten times more expensive in this application.

Meanwhile, the design of URABat eliminates the concern of battery hazard and environmental pollution, which satisfies consumers’ needs and makes it easy to be delivered to the marketplace. URABat is inherently safe because all components in the battery system, including the aluminum and graphite electrodes, and the separator, are inert. Ionic liquids are eco-friendly solvents because of their low volatility, non-toxicity, and non-flammable nature.

URABat is expected to impact the world by offering a new power storage alternative. It is a fast charging, stable battery, under all charging schemes and operating conditions. After commercialization, it will compete with lithium batteries for mobile devices and with lead acid batteries in electric motorcycles, scooters, bicycles, and in renewable energy storage in electricity grids.

Dr. Chang-Chung Yang, Deputy Division Director of ITRI’s Green Energy and Environment Research Laboratories, indicated that ITRI has two key technologies in the URABat system. One is an electrode with graphitic  foam material to achieve a 120 C fast-charging within 30 seconds. The other is the combination of a special-designed electrode structure and compatible electrolyte. “Currently, a single cell discharge capacities as high as 200 mAh g−1 can be obtained and 30,000 times cycle life test was proved in our lab,” said Dr. Yang. He further told ITRI TODAY that a sound layout of patents of core technologies of the developing aluminum battery has been completed.

According to Dr. Yang, the technologies including the graphite materials for cathode, ionic liquid, battery cell structure, modules and fast-charging control should put the team in a leading position among the research community of this area, and a solid foundation has been laid for future commercialization of aluminum battery technology and related industry in Taiwan. “We plan to cooperate with domestic manufacturers to accelerate the industrialization process,” Dr. Yang added. “The goal is to establish a new company with the capability of commercial production technology, and to bring products to international markets.”

The URABat maintains a 98 percent coulombic efficiency (CE) throughout its lifespan – which hypothetically means that repeated charges cause comparatively little degradation – and is made from graphite and aluminum materials which don’t catch fire when damaged





Liquid energy storage system for solar energy
BroadBit metallic sodium batteries