A facile hydrothermal reduction of self-assembled 3D graphene oxide (GO) is reported. A binder-free flexible supercapacitor is fabricated using the 3D graphene made in house, which exhibits high gravimetric capacitance (up to 220 F g−1) and excellent cycle stability with >80% capacitance retention over 10 000 cycles under a bending state.
The article was received on 31 Mar 2014, accepted on 28 Apr 2014 and first published on 28 Apr 2014
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