EEStor receives patent for revolutionary electric energy storage device

December 23 2008 / by Garry Golden
Category: Energy   Year: 2018   Rating: 3


Could a box full of electrons change the energy industry?

Texas-based stealth energy storage company EEStor is making news again on the blogosphere now that it has received a patent for its ground breaking capacitor that might find use in electric vehicles, utility grids or high performance portable devices. 

Why is this important for the auto industry?
The key to accelerating the adoption of electric vehicles is to advance energy storage devices. Batteries and fuel cells hold electricity using chemical storage, while capacitors store energy as a charge between two plates.

Designing a low cost, high performance capacitor has been a challenge for energy innovators. But EEStor believes its material platform of barium-titanate ceramic powder (94%) mixed with PET plastic could be the right combination.

The EEStor patent reveals a 281 pound storage device with more than 30,000 plates that can hold 52 kWh of electrical energy.

The company has an agreement with electric vehicle maker Zenn and Lockheed for military applications, but has intentionally kept a low profile.  Its effort to remain under the radar of media attention, has in turn created a lot of energy blogger hype.

Batteries, fuel cells and capacitors - Not one device rules them all!

The future of energy storage is not winner take all!  Batteries, fuel cells and capacitors all have their own applications.  But breakthroughs in capacitors are more rare - hence the hype around EEStor!

Capacitors promise quick charging (3-6 minutes) and discharging without the structural degredation of material associated with batteries.  They are going to be a critical component to next generation electric vehicles since they provide quick 'bursts' of energy release.

But it is unlikely that capacitors alone can transform the age of electric vehicles. There are serious engineering barriers to overcome in these 'lightning in a box' storage devices.

Cars are not iPods, and auto engineers will likely need all three energy storage devices to make electric cars work at the right price point.  But EEStor remains high on our list of Companies to Watch in the years ahead.


PDF of Patent via Ultracapicitors

Image Credit Marden Lightning Flickr CC License Attribution Generic 2.0

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