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New Device Batteries Last Longer, Charge Faster

U.S. scientists said they have invented a cheap, long-lasting and flexible battery made of aluminum for use in smartphones that can be charged in as little as one minute. The researchers, who detailed their discovery in the journal Nature, said the new aluminum-ion battery has the potential to replace lithium-ion batteries, used in millions of laptops and mobile phones. Besides recharging much faster, the new aluminum battery is safer than existing lithium-ion batteries, which...

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