期刊
ELECTROCHIMICA ACTA
卷 209, 期 -, 页码 85-94出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.05.071
关键词
Flame-induced reduction; Graphene; Nickel foam; Supercapacitor
资金
- Natural Science Foundation of China [51173087]
- Taishan Scholars Program
- [12-1-4-2-2-jch]
High-performance reduced graphene oxide/nickel foam (rGO/NF) composite electrodes for high-performance supercapacitors were prepared by flame-induced reduction of dry graphene oxide (GO) coated on nickel foam. Flame reduction of GO is a facile, feasible and cost-effective reduction technique, which is conducted without the need of any reductant. Most importantly, the rGO obtained by flame reduction showed a typical disordered cross-linking network and randomly distributed pores, which provide accessible routes for fast transportation of ions. It was demonstrated that the rGO/NF electrode with embedded current collector (NF) exhibited better electrochemical performance than conventional rGO film counterparts, including a high gravimetric specific capacitance of 228.6 F g(-1) at a current density of 1 A g(-1), excellent rate capability (over 81% retention at 32 A g(-1)) and high cycling stability with only 5.3% capacitance decay over 10,000 cycles of cyclic voltammetry at a ultrahigh scan rate of 1000 mV s(-1). This facile method for the fabrication of rGO/NF electrodes could envision enormous potential for high performance energy storage devices. (C) 2016 Elsevier Ltd. All rights reserved.
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