Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 1-11 |
| Number of pages | 11 |
| Journal | Carbon |
| Volume | 184 |
| Early online date | 07 Aug 2021 |
| DOIs | |
| Publication status | Published - 30 Oct 2021 |
Bibliographical note
Funding Information:The authors acknowledge financial support from the University of Science and Technology Development Fund Planning Project of Tianjin ( 2017KJ072 ) and the CAS Key Laboratory of Carbon Materials (No. KLCMKFJJ2011 ). We would like to thank the Analytical & Testing Center of Tiangong University for structured illumination microscopy work.
Publisher Copyright:
© 2021 Elsevier Ltd
Keywords
- Carbon nanofibers
- Electrocatalytic membrane
- Lithium-sulfur batteries
- Synergistic effect
ASJC Scopus subject areas
- General Chemistry
- General Materials Science
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