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Aquion manufactures cheap, long-lasting batteries for storing renewable energy.
ARPA-E is funding several projects that use liquid battery electrodes to cut costs and increase energy density.
MIT researchers find that contrary to conventional wisdom, cathodes made of disordered lithium compounds can perform better than perfectly ordered ones.
Prototype batteries that dissolve safely in the body could power ingested devices.
Electric vehicle range drops in cold weather, and technological solutions are years away.
SolarCity’s new battery system might help solar become a significant source of electricity.
SolidEnergy says its new battery materials store more energy and won’t catch fire.
ARPA-E says better sensors and controls could allow automakers to cut battery size by 20 to 50 percent.
Devices that can make wireless connections even without an onboard battery could spread computing power into everything you own.