Silicon carbide nanowires@Ni(OH)2 core–shell structures on carbon fabric for supercapacitor electrodes with excellent rate capability
Silicon carbide nanowires@Ni(OH)2 core–shell structures on carbon fabric for supercapacitor electrodes with excellent rate capability
复制标题
碳织物上碳化硅纳米线@Ni(OH)2核壳结构的超级电容器电极具有优异的倍率性能
DOI:
10.1016/j.jpowsour.2014.09.113
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发表时间:
2015
影响因子:
9.2
通讯作者:
Jian Sha
中科院分区:
文献类型:
--
作者:
Ren Lu;Wei Wang;Xinsheng Peng;Jian Sha
Silicon carbide (SiC) nanowires (NWs) are grown on flexible carbon fabric by chemical vapor deposition (CVD) method and Ni(OH)2are deposited on the surface of SiC NWs by electrochemical cathodic deposition. The capacitive performance of the as-prepared electrode was calculated based on pure Ni(OH)2and a very-high rate capability is achieved. A high specific capacitance of 1724 F g−1is got at 2 A g−1and the electrode still has a specific capacitance of 1412 F g−1at an ultrahigh charging/discharging current density of 100 A g−1. The excellent rate capability means great power characteristics of the supercapacitor electrode. With the charge/discharge rate of 100 A g−1, a high power density of 27.5 kW kg−1is achieved and the energy density still holds 59.4 Wh kg−1. Solid-state supercapacitor based on SiC NWs@Ni(OH)2on carbon fabric is also made and shows good flexible and cycling properties.
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