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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.
Battery breakthroughs could lower costs and improve performance for electric vehicles and renewable energy storage–but commercializing these new technologies will be challenging.
Lithium-ion batteries with nanotube electrodes could go longer between charges.
The company will share parts and production lines between hybrids and conventional vehicles.