Lithium battery 'Holy Grail' could provide 4 times the power

​Stanford University researchers say they've developed a "pure" lithium ion battery, and it could have us sending emojis, streaming music and driving electric cars up to four times as long.

Their work, published in Nature Nanotechnology, overcomes a problem engineers have spent years trying to solve: creating a lithium anode.

But the technology still is not commercially viable. Find out why with this Newsy video. 

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