Journal
RSC ADVANCES
Volume 6, Issue 43, Pages 36307-36313Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra04918d
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Funding
- Department of Science and Technology (DST) [DST-1272]
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A binder-free novel three-dimensional assembly comprising graphene, carbon nanoparticles and nickel hydroxide is presented as a supercapacitor electrode. The combined effect of three-dimensional graphene for excellent charge conduction and nickel hydroxide coating on carbon nanoparticles for high surface area was exploited to obtain excellent supercapacitance. The resulting structure presented an ultrahigh 4667 F g(-1) specific capacitance at a 2 A g(-1) discharge rate with 98.6% high charge retention for more than 1000 charge-discharge cycles. In addition, the presented assembly demonstrated very high power and energy densities.
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