多硫化物
碳纳米纤维
材料科学
储能
电化学
纳米纤维
氧化还原
化学工程
催化作用
锂(药物)
碳纤维
电极
电解质
阳极
硫黄
纳米技术
化学
碳纳米管
复合材料
有机化学
功率(物理)
复合数
物理化学
医学
冶金
内分泌学
工程类
量子力学
物理
作者
Chengbiao Wei,Yang Han,Hao Líu,Ruihui Gan,Qiqi Li,Yali Wang,Pei Hu,Chao Ma,Jingli Shi
出处
期刊:Carbon
[Elsevier]
日期:2021-10-01
卷期号:184: 1-11
被引量:27
标识
DOI:10.1016/j.carbon.2021.08.004
摘要
As emerging energy storage systems, lithium-sulfur (Li–S) batteries have engaged extensive attention owing to the ideal energy density. The bottleneck of achieving the practical application on Li–S batteries is the shuttle effects of lithium polysulfide (LiPS) and the sluggish electrochemical conversion kinetics. Here, a flexible SnS2-hollow carbon nanofibers (SnS2@HCNF) membrane is designed as an interlayer to catalyze the conversion of LiPS. Hollow carbon nanofibers (HCNF) provide an electron passageway to accelerate the redox reaction of LiPS, while SnS2 achieves rapid Li ions transport and an efficient catalytic route, promoting the decomposition of Li2S. Owing to the synergistic effect of HCNF and SnS2, the SnS2@HCNF endow the Li–S batteries with high rate performance (694 mAh g−1 at 3C) and low capacity fading rate (0.056 % per cycle during 500 cycles at 1C). The material and design strategy manifested in this work can pave a new way towards developing shuttle suppression interlayers.
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