文献类型：期刊文献

英文题名：CoP/C Nanocubes-Modified Separator Suppressing Polysulfide Dissolution for High-Rate and Stable Lithium-Sulfur Batteries

作者：Lin, Jiahao[1];Zhang, Kefu[1];Zhu, Zhaoqiang[1];Zhang, Ruizhi[1];Li, Nan[1];Zhao, Chunhua[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2020

卷号：12

期号：2

起止页码：2497

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20200408083812);WOS:【SCI-EXPANDED(收录号:WOS:000508464500057)】；

基金：We are grateful for the support of the Natural Science Foundation of Shanghai (No. 19NR1413000, 13ZR1411900), Shanghai Alliance Plan (No. LM201881, LM201751), Shanghai Leading Academic Discipline Project (B502), and Shanghai Key Laboratory Project (08DZ2230500). We also thank the Research Center of Analysis and Test of East China University of Science and Technology for the help with the characterization.

语种：英文

外文关键词：lithium-sulfur battery; cobalt phosphide; nanocubes; functioned-separator; polysulfide adsorption

摘要：A functioned PP was chosen as a separator to suppress the shuttling effect of soluble polysulfide in lithium-sulfur batteries (LSBs). Nanocubic cobalt phosphide/carbon (CoP/C) was modified on PP membrane through a simple vacuum filtration method. This CoP/C-modified PP separator not only efficiently captures polysulfides through strong chemical affinity but also facilitates the conversion of the soluble intermediates due to the fast transfer at the interface. In consequence, the cell with a CoP/C-modified separator exhibits a low-capacity decay of only 0.08% per cycle over 500 cycles at 1 C with an initial capacity of 938 mAh g(-1) and a superior rate performance of 594 mAh g(-1) at 4 C. Even with a high loading of 3.2 mg cm(-2), the cell still exhibits an excellent reversible capacity of 601.3 mAh g(-1) after 100 cycles at 0.5 C. This work provides a new strategy to effectively restrict the polysulfide shuttling.