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- Title
Addressing the Prominent Li<sup>+</sup> Intercalation Process of Metal Sulfide Catalyst in Li‐S Batteries.
- Authors
Wang, Jin; Yang, Shaohua; Xu, Zijia; Ai, Guo; Zhang, Ting; Mao, Wenfeng
- Abstract
Various catalysts are adopted to boost the conversion chemistry of Lithium sulfur (Li‐S) batteries, but most of them are electrochemical‐active in a working Li‐S cell, and the changes of their chemical state and the induced influence toward the Li‐S catalytic mechanism are unclear. Herein, a dynamic catalytic mechanism is proposed by the selection of Li+‐interaction‐reversible VS2 catalyst as a representative species to address this issue. The VS2 catalyst with ultrastable Li+ intercalation/deintercalation characteristics, fast charge transport capability, and active capacity contribution can provide a strong and dynamic chemisorption toward polysulfide (LiPS). The resulting Li‐S batteries exhibit excellent cyclability at 3 C with capacity attenuation of 81.23% over 250 cycles and good rate capability up to 8 C. Moreover, a new insight toward the dynamic catalytic changes induced by the prominent Li+ intercalation process of metal sulfide is proposed, which can provide more opportunities for the evolutional design for Li‐S catalysts.
- Subjects
LITHIUM sulfur batteries; METAL catalysts; METAL sulfides; POLYSULFIDES; ELECTROCHEMICAL analysis; CHEMISORPTION; CATALYSTS
- Publication
Advanced Materials Interfaces, 2022, Vol 9, Issue 6, p1
- ISSN
2196-7350
- Publication type
Article
- DOI
10.1002/admi.202101699