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Recent studies point to the potential of ultracapacitors to augment conventional batteries.
The DOE funds a company that recycles plug-in vehicle batteries.
A startup says its compressed-air technology could do a better job of storing the power generated by wind turbines.
A startup hopes to commercialize a novel design that features fluid electrodes.
An alternative to batteries gets an advance from tiny, crumpled sheets of graphene, whose electrodes can store more charge because they have larger surface areas.
A Chinese-built electric sedan could be the first on sale in the United States, but it will quickly face competition.
A new partnership could help the automaker increase the range of its vehicles.
Flexible carbon-nanotube supercapacitors could give more power to cell phones and other electronics.
In November, Fisker Automotive will begin sales of a car with 50 miles of battery-powered range.