Australian scientists have developed graphene-based supercapacitors that are so light they can be used to create electric vehicles that are powered by their own body parts, instead of batteries.
Electric cars are often touted as the future of sustainable transport, but they're held back by the fact that they require really heavy, slow-releasing batteries to power them - even the top-end Lithium-ion batteries on the market charge extremely slowly and weigh a lot.
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