期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 1, 期 22, 页码 6539-6542出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta11146f
关键词
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A polypyrrole-reduced graphite oxide core-shell composite was facilely fabricated through electrostatic interactions and pi-pi accumulation. This novel composite shows remarkable performance as an electrode material for supercapacitors, with a high specific capacitance of 557 Fg(-1) at a current density of 0.5 Ag-1, and retains a high value after 1000 charge-discharge processes. The maximum energy density of the fabricated supercapacitor based on the mass of active electrodes is calculated to be 49.5 W h kg(-1) and 33.3 W h kg(-1) at a power density of 0.22 kW kg(-1) and 6.06 kW kg(-1), the improved capacitance might be mainly ascribed to higher conductivity and more crumpled surface of the composite.
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