文献类型：期刊文献

英文题名：Enhancing the initial columbic efficiency and long cycle performance of lithium ion batteries by constructing interpenetrating and conductive dual network in SiC anode

作者：Ding, Yiming[1];Zhou, Feixiang[1];Huang, Jianghui[1];Ma, Xiang[5];Wang, Xiaoxia[2];Liu, Hui[3];Li, Mengzhu[4];Xu, Jun[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[3]Zhuguangya Inst Adv Sci & Technol, Shanghai 201306, Peoples R China;[4]China Acad Aerosp Sci & Innovat, Beijing 100088, Peoples R China;[5]Sichuan Univ, Sch Chem Engn, Chengdu 610065, Peoples R China

年份：2025

卷号：515

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20251918401527);WOS:【SCI-EXPANDED(收录号:WOS:001491962700006)】；

基金：Financial support by the project of China Petroleum Engineering Corp., Ltd. (CPEC) with grant number of 2021ZYGC-01-01 is gratefully acknowledged.

语种：英文

外文关键词：Lithium-ion battery; Si anodes; Aqueous polymeric binder; Crosslinking polymer; Conductive network

摘要：The complex design of a multifunctional binder for silicon-based anodes, which focuses on dynamically generated hydrogen bond with self-healing properties, simultaneously mitigates significant volume changes and maintain a continuous conductive network during cycling. Herein, a binary network of conductive stretchable polymer (Ag@PVA-Al3+-WPU) composed of conducting a self-healing network (PVA-Al3+-WPU) and nano-silver is synthesized. The elastic polymeric network which confines silicon particles preserves the structural integrity of the electrode, while the monodispersed nano-silver facilitates rapid electron transfer by generating an internal electric field. Benefiting from the above advantages, the Ag@PVA-Al3+-WPU-based silicon anode demonstrates a high initial coulombic efficiency (ICE) of nearly 96% and retains 83% capacity after 500 cycles at 1C. Furthermore, LFP//SiC950/Ag@PVA-Al3+-WPU full cells were assembled to explore the prospects for practical potential, which shows stable cyclability and superior capacity retention over 200 cycles. This innovative binder design strategy characterized by high conductivity, elasticity, and self-healing properties could advance the development of high-energy-density lithium-ion batteries.