EEStor Granted Patent, information released.

[tinrobot]

Cedar Park Texas-based EEStor Inc. is an intriguing though secretive company to those who follow the development of electric cars. Although no known prototypes exist, they claim the ability to make extremely lightweight highly energy dense electric storage units (EESUs) that could revolutionize energy storage in electric vehicles. Indeed they have an exclusivity agreement to build EESU-powered ZENNergy drive electric vehicles with the Canadian company Zenn.

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The core ingredient is an aluminum coated barium titanate powder immersed in a polyethylene terephthalate plastic matrix. The EESU is composed of 31,353 of these components arranged in parallel. It is said to have a total capacitance of 30.693 F and can hold 52.220 kWh of energy. The device is said to have a weight of 281.56 pound including the box and all hardware. Unlike lithium-ion cells, the technology is said not to degrade with cycling and thus has a functionally unlimited lifetime.

http://gm-volt.com/2008/12/21/eestor-is-granted-a-new-patent-on-the-eesu-offering-extensive-detail-on-its-design-and-function/

So finally we get some numbers out of this company -- 52 KWh of electricity in a 280 lb package.

As reference, the Chevy Volt's lithium battery claims a 16KWh in a 400 lb package.

Interesting.