文献类型：期刊文献

英文题名：Covalent and non-covalent cross-linked based polymer binders for high-sulfur-loading lithium-sulfur batteries

作者：Ma, Danna[1] Wen, Yong[2] Lin, Xiangyu[1] Li, Jie[1] Zhu, Ziming[2] Wang, Shanshan[2] Liu, He[1] Xu, Xu[2]

第一作者：Ma, Danna

通信作者：Liu, H[1];Xu, X[2]

机构：[1]Natl Forestry & Grassland Adm, Key Lab Chem Engn Forest Prod, Key Lab Biomass Energy & Mat, Inst Chem Ind Forest Prod,Chinese Acad Forestry,Co, Nanjing 210042, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China

年份：2025

卷号：511

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20251418172808);Scopus(收录号：2-s2.0-105001574932);WOS:【SCI-EXPANDED(收录号:WOS:001464528200001)】；

语种：英文

外文关键词：Binder; Lithium-sulfur batteries; Covalent cross-linked; Polysulfide adsorption; High-sulfur-loading

摘要：For the practical implementation of high-energy-density lithium-sulfur (Li-S) batteries, cathodes with high sulfur loading are considered essential. However, conventional non-covalent binders face challenges in maintaining structural integrity under elevated sulfur contents. Here, we introduce a novel covalent and non-covalent cross-linked binder, LA-PEGDA-MPC (LPM), designed to form a three-dimensional (3D) network. This binder effectively suppresses the lithium polysulfide (LiPSs) "shuttle effect," accelerates redox kinetics, and exhibits robust mechanical properties, collectively enhancing battery performance, particularly under high-sulfur-loading conditions. With the LPM binder, a sulfur cathode with a high loading of 8.73 mg cm-2 achieves an areal capacity of 7.12 mAh cm-2 after 70cycles at 0.1C. The LPM cathode delivers an initial discharge specific capacity of 907.4 mAh g-1 and maintains 694.1 mAh g-1 after 600 stable cycles at 1.0C, with a low capacity decay rate of 0.0392 % per cycle. The potential of LPM binders for achieving high-performance, high-energy-density Li-S batteries is emphasized in this work, which paves the way for the development of next-generation energy storage systems.