@article{Luo2024, 
author = {Yufeng Luo and Zhenhan Fang and Zixin Hong and Shaorong Duan and Haitao Liu and Hengcai Wu and Qunqing Li and Yuegang Zhang and Shoushan Fan and Wenhui Duan and Jiaping Wang},
title = {Influences of chemical reactions on polysulfide reduction reaction process on promotor surface in Li-S batteries},
year = {2024},
journal = {Nano Research},
volume = {17},
number = {4},
pages = {2712-2718},
keywords = {promotors, polysulfides, chemical reactions, catalytic ability, in-situ Raman measurements},
url = {https://www.sciopen.com/article/10.1007/s12274-023-6129-5},
doi = {10.1007/s12274-023-6129-5},
abstract = {Polar promotors have been proven effective in catalyzing the polysulfide (PS) reduction reaction (PSRR) process in lithium-sulfur (Li-S) batteries. However, the promotor surface tends to be poisoned due to the accumulation of insoluble discharging products of lithium disulfide (Li2S2) and lithium sulfide (Li2S) during Li-S battery operation. Herein, we investigate the detailed PSRR mechanism on the surface of manganese sulfides (MnS) as a representative promoter by performing in-situ Raman mapping measurements. The catalytic ability of MnS enables thorough electrochemical reduction of PSs to Li2S2 and Li2S on the MnS surface. The generated Li2S2 and Li2S then adsorb the dissolved PSs via chemical reactions among sulfur species during the subsequent PSRR process. This phenomenon mitigates promotor poisoning and continuously improves the reversible capacity. Consequently, the assembled Li-S cell demonstrates excellent electrochemical performance after introducing a conductive interlayer containing a thin piece of carbon nanotube film and MnS promotors.}
}