多硫化物
材料科学
锂(药物)
碳纳米管
碳纤维
电极
纳米技术
化学工程
复合材料
复合数
电解质
医学
化学
物理化学
工程类
内分泌学
作者
Xiongwei Wu,Hao Xie,Qingqing Deng,Huixian Wang,Hang Sheng,Ya‐Xia Yin,Wei Zhou,Ruilian Li,Yu‐Guo Guo
标识
DOI:10.1021/acsami.6b14687
摘要
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.
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