Illustration of the asymmetric supercapacitor, consisting of vertically aligned graphene nanosheets coated with iron nitride and titanium nitride as the anode and cathode, respectively. Credit: © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Supercapacitors can be charged and discharged tens of thousands of times, but their low energy density compared to conventional batteries limits their application for energy storage. Now, A*STAR researchers in Singapore have developed an ‘asymmetric’ supercapacitor based on metal nitrides and graphene that could be a viable energy storage solution.
A supercapacitor’s viability is largely determined by materials its anodes and cathodes are comprised...
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