文献类型：期刊文献

英文题名：A zwitterionic polymer binder Integrating multiple dynamic interactions enables High-Performance Lithium-Sulfur batteries

作者：Lin, Xiangyu[1] Wen, Yong[2] Ma, Danna[1] Li, Jie[1] Zhu, Ziming[2] Wang, Shanshan[2] Liu, He[1] Xu, Xu[2] Huang, Xujuan[3]

第一作者：Lin, Xiangyu

通信作者：Liu, H[1];Xu, X[2];Huang, XJ[3]

机构：[1]Chinese Acad Forestry, Key Lab Biomass Energy & Mat, Inst Chem Ind Forestry Prod, Nanjing 210042, Jiangsu Provinc, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China;[3]Yancheng Inst Technol, Sch Chem & Chem Engn, Yancheng 224000, Peoples R China

年份：2025

卷号：512

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20251618271977);Scopus(收录号：2-s2.0-105002826912);WOS:【SCI-EXPANDED(收录号:WOS:001476684700001)】；

基金：We gratefully acknowledge the Jiangxi "Double Thousand Plan" (jxsq2023102212) for financial support of this research.

语种：英文

外文关键词：Polymer binder; Lithium-sulfur batteries; Zwitterionic; Polysulfide adsorption

摘要：Lithium-sulfur (Li-S) batteries are highly appealing due to their exceptional energy density. However, their commercialization faces significant barriers, including the polysulfide shuttle effect, limited electron transfer, and electrode instability. Herein, to confront these issues, a multi-functional zwitterionic polymer binder (PLM) is designed based on dynamic interactions including electrostatic interactions, hydrogen bonds, and dynamic disulfide bonds. The reversible cross-linking network ensures the PLM binder's intrinsic self-healing capability, further promoting cathode stability. The abundant polar groups enable a strong ability to anchor lithium polysulfides, while the phosphate and carboxylate anions enhance Li+ mobility through electrostatic interactions, accelerating diffusion kinetics. Furthermore, the flame-retardant guarantees its improved fire safety potential. As a result, the PLM cathode enables exceptional long-term cycling stability, achieving a capacity decay rate of 0.041 % per cycle over 500 cycles at 1.0C. At a sulfur loading of 7.42 mg cm-2, it retains a high areal capacity of 5.46 mAh cm-2 after 150cycles. Even at a higher sulfur loading of 11.45 mg cm-2 and a reduced electrolyte of 6.4 mu L mg-1, it delivers a superior areal capacity of 7.64 mAh cm-2 after 80cycles. These findings highlight the PLM binder's potential to enhance the performance of Li-S batteries.