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Li-ion batteries blow up because they breed nanowire crystals

Boffins think ‘dendrites’ are the inevitable result of re-charges, which is awkward

Video  For the first time a group of scientists has captured close-up images of mysterious finger-like growths known as dendrites that can lead to short circuits and fires in the lithium-ion batteries that power hordes of smartphones, laptops and other gadgetries.…

http://go.theregister.com/feed/www.theregister.co.uk/2017/10/27/scientists_image_weird_dendrites_forming_in_lithiumion_batteries/