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

作者：Yanbo Wang, Qi Yang, Xun Guo, Shuo Yang, Ao Chen, Guojin Liang, Chunyi Zhi · 发表于：Rare Metals · 年份：2021 · DOI：10.1007/s12598-021-01816-y · 被引用次数：81 · 研究领域：Advancements in Battery Materials、Advanced Battery Materials and Technologies、Advanced Battery Technologies Research

Abstract 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 solution. There 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 conduc...