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Batteries with ultra-capacitor system

Batteries with ultra-capacitor system

EEStor's system, called the Electrical Energy Storage Unit or EESU, appears to overcome the traditional limitations of ultracapacitors.

According to an article published on January 22, 2007 in Technology Review, a company from Texas, USA, claims to be able to manufacture a new energy storage system based on an ultracapacitor architecture capable of replacing electrochemical batteries in all fields.

EEStor has broken the silence about its development program for a new energy storage technology this week, announcing that it has already reached two production milestones and will be in a position to ship systems this year for use in electric vehicles.

According to the patent documents, the goal is to "replace electrochemical batteries" in virtually all applications, from purely electric and hybrid vehicles to portable computers.

The company claims that its system, a kind of battery-ultracapacitor hybrid based on barium titanate powder, will vastly outperform the best lithium-ion batteries on the market in terms of energy density, price, charging time and safety. At the same size, it will be 10 times more powerful than traditional lead-acid batteries, costing half and without the use of chemicals or toxic materials.

The implications are enormous and, for many, incredible. Such a breakthrough can radically transform a transport sector that is already groping with electricity, improve the performance of intermittent energy sources such as wind and solar, and increase the efficiency and stability of energy networks.

Source: Technology Review

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