Strategies of binder design for high-performance lithium-ion batteries:a mini review

作     者：Yan-Bo Wang Qi Yang Xun Guo Shuo Yang Ao Chen Guo-Jin Liang Chun-Yi Zhi Yan-Bo Wang;Qi Yang;Xun Guo;Shuo Yang;Ao Chen;Guo-Jin Liang;Chun-Yi Zhi

作者机构：Department of Materials Science and EngineeringCity University of Hong KongKowloon 999077Hong KongChina Hong Kong Center for Cerebro-Cardiovascular Health Engineering(COCHE)Shatin 999077Hong KongChina 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2022年第41卷第3期

页      面：745-761页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：financially supported by the National Key R&D Program of China (No. 2019YFA0705104) Guangdong Province Science and Technology Department under Project (No. 2020A0505100014) 

主　　题：Lithium-ion batteries Binder Binding mechanism Binder design 

摘      要：Developing high-performance lithium-ion batteries (LIBs) with high energy density, rate capability and long cycle life are essential for the ever-growing practical application. Among all battery components, the binder plays a key role in determining the preparation of electrodes and the improvement of battery performance, in spite of a low usage amount. The main function of binder is to bond the active material, conductive additive and current collector together and provide electron and ion channels to improve the kinetics of electrochemical reaction. With the ever-increasing requirement of high energy density by LIBs, technical challenges such as volume expansion and active material dissolution are attracting worldwide attentions, where binder is thought to provide a new *** are two main categories (organic solvent soluble binder and water-soluble binder) and abundant polar functional groups providing adhesion ability. It is of great significance to timely summarize the latest progress in battery binders and present the principles for designing novel binders with both robust binding interaction and outstanding electrode stabilization function. This review begins with an introduction of the binding mechanism and the related binding forces, including mechanical interlocking forces and interfacial forces. Then, we discussed four different strategies (the enhancement of binding force,the formation of three-dimensional (3D) network, the enhancement of conductivity and binders with special functions) for constructing ideal binder system in order to satisfy the specific demands of different batteries, such as LIBs and lithium–sulfur (Li–S) batteries. Finally, some prospective and promising directions of binder design are proposed based on the existing and emerging binders and guide the development of the next-generation LIBs.