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A new cathode design could result in batteries that can store double the amount possible with current electric car batteries.
GM licenses technology that could also make the batteries much cheaper.
A method for turning powders into fibers has many potential applications.
Electric cars arrive, and solar, batteries, biofuels, and engines all advance.
As Congress prepares to vote on a comprehensive spending bill, U.S. energy projects such as ARPA-E hang in the balance.
The next few years will show whether the batteries in electric cars from GM and Nissan are safe and reliable.
The government funds a factory to make battery materials, but it’s not even clear they’ll be needed.
GM and Nissan hope to reduce costs by reusing depleted batteries.
Portable electronics could run 40 percent longer using a new type of anode.
Promising battery technologies often get bogged down in long experiments–a new test could set them loose.