A facilely prepared polypyrrole–reduced graphene oxide composite with a crumpled surface for high performance supercapacitor electrodes
2013; Royal Society of Chemistry; Volume: 1; Issue: 22 Linguagem: Inglês
10.1039/c3ta11146f
ISSN2050-7488
AutoresTao Qian, Chenfei Yu, Shishan Wu, Jian Shen,
Tópico(s)Advancements in Battery Materials
ResumoA polypyrrole–reduced graphite oxide core–shell composite was facilely fabricated through electrostatic interactions and π–π accumulation. This novel composite shows remarkable performance as an electrode material for supercapacitors, with a high specific capacitance of 557 F g−1 at a current density of 0.5 A g−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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