锂离子电池隔膜表面改性技术应用综述

Review on the Application of Surface Modification Technology for Lithium Ion Battery Separators

传统锂离子电池隔膜,由于电解液润湿性和热稳定性差的特点,限制了其在高性能高安全性电池领域的应用。隔膜表面改性实现隔膜表面功能化以解决锂离子电池隔膜的固有问题,成为一种可行策略。从表面物理改性和表面化学改性两个方面,分别阐述了喷涂法、浸涂法、溶液浇铸法、静电纺丝法、化学接枝法、等离子体法、辐射接枝法和紫外接枝法表面改性方法的特点和前沿动态,并指出开发多功能隔膜、智能响应隔膜和递减改性成本,是未来锂离子电池隔膜表面改性的研究方向。

Due to the poor wettability and thermal stability of electrolyte,the application of traditional lithium ion battery separator in the field of high-performance and high safety battery is limited.The surface modification of the separator to realize its surface functionalization has become a feasible strategy to solve the inherent problems of lithium-ion battery separators.From perspective of surface physical modification and surface chemical modification,this paper elaborated respectively the features and cutting-edge dynamics of various surface modification methods,such as spray coating,dip coating,solution casting,electrospinning,chemical grafting,plasma,radiation grafting and UV grafting.The paper also indicated that developing multifunctional separators,intelligent response separators,and reducing modification costs would be the research directions for surface modification of lithium-ion battery separators in the future.