文献类型：期刊文献

英文题名：CooperativeMultisite Adsorption-Enabled Interface-AdaptiveBinder for Stabilizing High-Capacity Si/C Composite Anodes

作者：Liu, Chang Xu, Taojun Jiang, Donghai Shi, Yongyong Peng, Cong Gong, Laifu Wang, Fugui Yang, Kuan Qiu, Wei Ma, Xianguo Zou, Shuliang

通信作者：Ma, XG[1];Zou, SL[1];Shi, YY[2]

机构：[1]Guizhou Inst Technol, Sch Food & Drug Mfg Engn, Sch Chem Engn, Guiyang 550025, Peoples R China;[2]Guizhou Univ, Sch Chem & Chem Engn, Guiyang 550025, Peoples R China;[3]Guizhou Normal Univ, Sch Mat & Architectural Engn, Guiyang 550025, Peoples R China

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Food & Drug Mfg Engn, Sch Chem Engn, Guiyang 550025, Peoples R China;corresponding author), Guizhou Univ, Sch Chem & Chem Engn, Guiyang 550025, Peoples R China.|贵州理工学院化学工程学院;贵州理工学院;

年份：2026

外文期刊名：LANGMUIR

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001858356900001)】；

基金：The authors gratefully acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 51963004), the Natural Science Foundation of Guizhou Province (Grant Nos. QKHJC-ZK [2023] Key 019, QKHJC-ZD [2025] 038, QKH-CG [2025] Key 102), the Guizhou University Talent Introduction Research Fund [Guizhou University Talent Fund Grant No. (2024) 10], and the Guizhou Science and Technology Department MS[2026]259.

语种：英文

摘要：Silicon-graphite (Si/C) composite anodes are promising for next-generation lithium-ion batteries because of their high capacity and industrial compatibility; however, their practical application is hindered by unstable interfacial chemistry and electrode degradation associated with the large volume changes of silicon during cycling. Herein, an interface-adaptive polymer binder, poly(2-acrylamido-2-methylpropanesulfonic acid-co-2-ethylhexyl acrylate-co-acrylic acid) [P(AMPS-co-2-EHA-co-AA), PAEA], is developed to stabilize the heterogeneous Si/C interface through synergistic molecular interactions. PAEA integrates amide, lithium sulfonate, and lithium carboxylate moieties within a single polymer network, enabling reversible hydrogen bonding, ionic interactions, Li+ affinity, and adhesion to hydroxylated Si surfaces. These functional groups establish a multisite adsorption network across Si-rich and carbon domains, thereby enhancing interparticle cohesion and maintaining interfacial contact during cycling. Meanwhile, the lithium sulfonate and carboxylate moieties regulate the local Li+ distribution and facilitate interfacial ion transport, which helps reduce polarization and homogenize interfacial reactions. The enhanced interfacial affinity between PAEA and Si, together with the regulated Li+ flux, reduces direct electrolyte attack and parasitic side reactions, leading to the formation of a thin (4.65 nm), inorganic-rich SEI containing ROCO2Li, Li2CO3, Li2O, LiF, and LiPO x F y , with a Li+ diffusion coefficient of 16.3 & times; 10(-6) cm(2) s(-1). This interfacial layer contributes to the stabilization of the electrode/electrolyte interface and suppresses continuous SEI growth and structural degradation during cycling. The PAEA-based electrode delivers a capacity of 633.3 mAh g(-1) with 82.6% retention after 400 cycles at 0.5 C and maintains a capacity of 633.8 mAh g(-1) at 1 C. Furthermore, high-loading pouch-type full cells paired with LiNi0.8Co0.1Mn0.1O2 cathodes retain 79.7% of their initial capacity after 200 cycles, demonstrating the potential of PAEA as a binder for Si/C-based lithium-ion batteries.