期刊
MATERIALS LETTERS
卷 251, 期 -, 页码 180-183出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2019.04.035
关键词
Three-dimensional; Integration; Carbon nanotubes; Composite materials; Li-S battery; Electrochemical performance
资金
- National Natural Science Foundation of China, China [21706171]
- Key Research and Development Program of Shanxi Province, China [201803D121120]
A freestanding thin-film composite with carbon nanotubes/carbon fiber modified by sulfur (S-CNTs/CF) has been fabricated by chemical vapor deposition (CVD) method as the binder-free cathode for lithium sulfur battery. This porous electronic conductor with 3D structure improved the electrochemical performance of the cathodes by simultaneously increasing porosity of material and changing conductive pathway. Electrochemical test results showed that the discharge specific capacity of S-CNTs/CF positive electrode decreased slightly from initial 1213.6 mAh g((sulfur))(1) to 798.4 mAh g((sulfur))(1) after 55 cycles. Comparing with powder cathode, the electrochemical performance of S-CNTs/CF cell is improved significantly. It proves that establishing a sulfur electrode with stable conductive and high porous structure provide a promising way to improve the cycle life. (C) 2019 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