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Free-piston engines could be used to generate electricity as efficiently as, and less expensively than, fuel cells.
Researchers show a low-cost route to making materials for advanced batteries in electric cars and hybrids.
An MIT group hopes that its foldable electric vehicles will cut pollution, and ease congestion.
GM plans to develop batteries with A123 Systems for its new electric vehicle.
Better batteries are making electric motorcycles possible, providing a cleaner alternative to pollution-spewing gas-powered bikes.
The flexible electric car platform is innovative, but the fuel-cell version is freighted with hydrogen’s flaws.
A secret, fast-charging, powerful battery.
Washington’s growing interest could help make plug-in hybrids more affordable. The payoff: 150 miles per gallon.
A Texas company says it can make a new ultracapacitor power system to replace the electrochemical batteries in everything from cars to laptops.
Recent advances in battery chemistry and systems design could lead to working prototypes by year’s end.