Performance characteristics of supercapacitor electrodes made of silicon carbide nanowires grown on carbon fabric
Performance characteristics of supercapacitor electrodes made of silicon carbide nanowires grown on carbon fabric
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DOI：
10.1016/j.jpowsour.2013.06.050
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发表时间：
2013-12-01
影响因子：
9.2
通讯作者：
Sha, Jian
中科院分区：
文献类型：
--
作者：
Gu, Lin;Wang, Yewu;Sha, Jian
在本文中，我们报告了具有优异的循环稳定性的超级电容器电极，这是由碳化硅纳米线（SiC纳米线）生长在柔性碳纤维织物。在室温下，扫描速率为50 mV·s（-1）时，获得了23 mF·cm（-2）的高面电容，电容随工作温度的升高而增大。由于SiC纳米线和碳织物具有优异的热稳定性，在室温（20摄氏度）下经过10（5）次循环后，电容量没有出现明显的下降，满足了商业应用的需求。进一步将测量温度升高至60 ℃，在10（5）次循环后仍保持初始电容的90%。本研究表明碳纤维织物上的碳化硅纳米线是一种很有前途的高温稳定微型超级电容器电极材料。(C)2013爱思唯尔有限公司版权所有。
In this paper, we report the supercapacitor electrodes with excellent cycle stability, which are made of silicon carbide nanowires (SiC NWs) grown on flexible carbon fabric. A high areal capacitance of 23 mF cm(-2) is achieved at a scan rate of 50 mV s(-1) at room temperature and capacitances increase with the rise of the working temperature. Owing to the excellent thermal stability of SiC NWs and carbon fabric, no observable decrease of capacitance occurs at room temperature (20 degrees C) after 10(5) cycles, which satisfies the demands of the commercial applications. Further increasing the measurement temperature to 60 degrees C, 90% of the initial capacitance is still retained after 10(5) cycles. This study shows that silicon carbide nanowires on carbon fabric are a promising electrode material for high temperature and stable micro-supercapacitors. (C) 2013 Elsevier B.V. All rights reserved.