Three-Dimensional Carbon Nanotubes Forest/Carbon Cloth as an Efficient Electrode for Lithium–Polysulfide Batteries

详细信息    查看全文

• 作者：Xiong-Wei Wu ; Hao Xie ; Qi Deng ; Hui-Xian Wang ; Hang Sheng ; Ya-Xia Yin ; Wen-Xin Zhou ; Rui-Lian Li ; Yu-Guo Guo
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2017
• 出版时间：January 18, 2017
• 年：2017
• 卷：9
• 期：2
• 页码：1553-1561
• 全文大小：641K
• ISSN：1944-8252

文摘

The development of a three-dimensionally flexible, large-surface area, high-conductivity electrode is important to improve the low conductivity and utilization of active materials and restrict the shuttle of long-chain polysulfides in Li–polysulfide batteries. Herein, we constructed an integrated three-dimensional carbon nanotube forest/carbon cloth electrode with heteroatom doping and high electrical conductivity. The as-constructed electrode provides strong trapping on the polysulfide species and fast charge transfer. Therefore, the Li–polysulfide batteries with as-constructed electrodes achieved high specific capacities of ∼1200 and ∼800 mA h g^–1 at 0.1 and 1 C, respectively. After 300 cycles at 0.5 C, a specific capacity of 623 mA h g^–1 was retained.