文献类型：期刊文献

英文题名：A water-soluble binder in high-performance silicon-based anodes for lithium-ion batteries based on sodium carboxymethyl cellulose and waterborne polyurethane

作者：Sun, Xingshen[1,2,3] Lin, Xiangyu[2,3] Wen, Yong[2] Dong, Fuhao[3] Guo, Lizhen[3] Song, Zhanqian[3] Yang, Zitao[1] Liu, He[3] Li, Xuequan[1] Xu, Xu[2] Wang, Hongxiao[3]

第一作者：Sun, Xingshen

通信作者：Li, XQ[1];Xu, X[2];Wang, HX[3]

机构：[1]Wuyi Univ, Fujian Prov Univ, Dept Coll Ecol & Resource Engn,Key Lab Green Chem, Fujian Prov Key Lab Ecoind Green Technol, Wuyishan 354300, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forestry Prod, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Key Lab Biomass Energy & Mat,Natl Forestry & Grass, Nanjing 210042, Jiangsu, Peoples R China

年份：2024

卷号：26

期号：18

起止页码：9874-9887

外文期刊名：GREEN CHEMISTRY

收录：;EI(收录号：20243617004286);Scopus(收录号：2-s2.0-85203072497);WOS:【SCI-EXPANDED(收录号:WOS:001303118700001)】；

基金：We gratefully acknowledge the Foundation of Jiangsu Province Biomass Energy and Material Laboratory (JSBEM-S-202201), the Key Projects of Scientific and Technological Innovation of Fujian Province (No. 2022G02020, 2022H6002), the Natural Science Foundation of Fujian Province (2023J011053, 2023J011054), and the Educational Research Project of Young and Middle-aged Teachers in Fujian Province (JAT220384).

语种：英文

外文关键词：Binders - Crosslinking - Lithium-ion batteries - Sodium-ion batteries

摘要：Silicon (Si) materials have attracted growing attention in lithium-ion batteries (LIBs) due to their remarkably high-theoretical capacity and abundance on Earth. Despite the excellent edges, the widespread application of silicon materials in LIBs has been severely limited by rapid capacity decay and an unstable solid-electrolyte interphase (SEI) due to their substantial volume changes (>300%). Here, we report a novel water-soluble binder (CW-20), comprising sodium carboxymethyl cellulose (CMC-Na) and waterborne polyurethane (WPU). Not only the novel binder can establish a cross-linked three-dimensional (3D) network through hydrogen bonding, which effectively maintains the electrodes' integrity, but also the binder can form a stable SEI layer, thereby improving the cycling stability and durability. Thus, the Si@CW-20 electrode maintains a specific capacity of 2626.2 mA h g(-1) after 100 cycles at 0.1C. After 500 cycles at 0.5C, the Si@CW-20 electrode exhibits excellent stability, maintaining a high specific capacity of 1450.7 mA h g(-1) with a capacity decline rate of 0.08% per cycle. Moreover, Si/C@CW-20 exhibits a capacity retention rate of 86.93% after 250 cycles at 1C. The cycling stability and durability of Si and Si/C anodes demonstrate significant potential for this strategy in facilitating the widespread implementation of high-capacity LIBs.