A Mo <sub>2</sub> C–MoP heterostructure enabled catalytic route for high-performance lithium–sulfur batteries
The commercialization of lithium-sulfur (Li-S) batteries is hindered by polysulfide shuttling and the sluggish conversion kinetics. Herein, we report a strategy for regulating the polysulfide conversion pathway <i>via</i> a Mo<sub>2</sub>C-MoP heterostructure. With moderate adsorption strength and strong orbital coupling, this heterostructure catalyzes the cleavage of Li<sub>2</sub>S<sub>6</sub> into LiS<sub>3</sub>˙ radicals, which subsequently undergo rapid liquid-phase disproportionation to facilitate chemical nucleation of Li<sub>2</sub>S, thereby bypassing the slow liquid-solid conversion step. The S/Mo<sub>2</sub>C-MoP@CNF cathode constructed by this mechanism exhibits remarkable electrochemical performance, achieving a high discharge capacity of 1054.2 mAh g<sup>-1</sup> at 0.5C with a low capacity fading of only 0.062% per cycle.
Authors
- Baijing Wu
- Zidong Wei (ORCID: https://orcid.org/0000-0001-8001-9729)
- Xiaoxia Tang
- Minhua Shao (ORCID: https://orcid.org/0000-0003-4496-0057)
- Cunpu Li (ORCID: https://orcid.org/0000-0002-5912-2980)
- Hongrui Wang (ORCID: https://orcid.org/0000-0002-2916-8849)
- Tong Cheng
- Yujiao Xiang
Institutions
- Chongqing University (CN)
- Hong Kong University of Science and Technology (HK)
- Guangzhou HKUST Fok Ying Tung Research Institute (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-11-28
- DOI
- https://doi.org/10.1039/d5cc05937b
- Primary Topic
- Advanced Battery Materials and Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00