As a new kind of energy storage devices, supercapacitors possess a higher power density, a longer cycle life, a simpler charging circuit, no memory effect and are much safer and maintenance-free. They have broad applications in electric vehicles, mobile communications, defence-related science and technology, and so on. The tribology of low dimensional materials research group at the Lanzhou Institute of Chemical Physics of the Chinese Academy of Sciences has made new findings in graphene nanosheets/Ionic liquid based supercapacitors.
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