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New solid-state power-management devices will charge cars fast and make the power grid more flexible and efficient.
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.
The government funds a factory to make battery materials, but it’s not even clear they’ll be needed.
Portable electronics could run 40 percent longer using a new type of anode.
Lithium-ion batteries with nanotube electrodes could go longer between charges.
A study says 35 percent of electricity could come from solar and wind–without expensive new backup power plants.
Utilities are installing devices that make ice at night to replace air-conditioning during times of peak power demand.
New ultracapacitor material could be fabricated directly on chips and solar cells.
DOE funds the development of low-cost sodium-ion batteries.