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PNNL study outlines requirements for grid storage, reviews four electrochemical energy storage systems: vanadium redox flow, Na-beta, Li-ion and lead-carbon

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Classification of potential electrical storage for stationary applications. However, the authors note, to date EES (almost exclusively pumped hydroelectric storage) contributes to only about 2% of the installed generation capacity in the United States. Vanadium redox flow battery. Credit: ACS, Yang et al.

Li-ion 231
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Slow start for charge of the electric cars - Times Online

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The government is keen to stimulate the electric vehicle business in Britain.There are many engineering companies providing vital services and componentsfor electric cars and a number of start-ups making, or planning to make,electric cars and trucks in small volume. So the car uses an electrical store to power the drive motor.