期刊
JOURNAL OF POWER SOURCES
卷 340, 期 -, 页码 302-308出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.11.085
关键词
Supercapacitor; Flexible; Stretchable; Au nanograin; Aligned CNT
资金
- National Natural Science Foundation of China, China [51272033, 51572037, 51335002]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Linear supercapacitors suffer a severe loss of capacity at high rates due to the trade-off of radial ion diffusion and axial electron transport. Optimizing axial conductivity of electrodes is a key to circumvent this trade-off. We report here the synthesis of Au nanograin decorated aligned multiwall carbon nano tube (CNT) sheets, followed by the incorporation of polyaniline (PANI). The embedded Au nanograins results in fast radial ion diffusion and enhance axial electron transport in the linear electrodes. The flexible linear solid supercapacitor fabricated by twisting two PANI@Au@CNT yarns exhibits an outstanding electrochemical performance with a total volumetric capacitance of similar to 6 F cm(-3) at scan rate up to 10 V s(-1). Diameter of the electrode has little effect on volumetric capacitance even at high scan rates because of its high electrical conductivity. Highly stretchable supercapacitors with high rate performance and excellent cycling and stretching stability have been also fabricated using buckled linear electrodes made by wrapping PANI@Au@CNT sheet on elastic rubber fibers. The stretchable linear supercapacitor possesses a stable total volumetric capacitance of up to similar to 0.2 F cm(-3) at scan rate of 1 V s(-1) and at 400% strain, and remarkable capacitance retention of about 95% over 1000 stretch/release cycles. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据