Lithium ion batteries are the go to energy source for gadgets, powering everything from our smartphones to our laptops.
But too much use can cause them to run down, overheat, and in the case of some faulty phones, explode.
Now scientists have used X-rays to peer inside lithium batteries to find out why some of them swell like a pillow.
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Scientists in Canada have used x-rays to peer inside lithium batteries to find out why some of them swell like a pillow. They used CT scans to show what happens in a typical jelly roll style battery (pictured), used in smartphones and laptops
They revealed that when the batteries are overheated or overcharged, chemical reactions produce gas inside the cells causing the pillowing effect.
A team from the Canadian Light Source (CLS) in Saskatoon used high resolution CT scans to image the inside of a jellyroll type…