锂离子电池中固体电解质界面膜(SEI)研究进展

Progress in Solid Electrolyte Interface in Lithium Ion Batteries

本文综述了锂离子电池中固体电解质界面膜 (SEI膜 )的研究进展。在总结SEI膜的形成机理及模型的基础上 ,讨论了对SEI膜可能的影响因素及其改性方法 ,以及各种表征技术、特别是原位分析技术在SEI膜研究中的实际应用。指出在今后的研究中 ,正极表面与电解液间的界面膜 ,以及引入水溶性粘合剂体系后正负极表面与电解液间的相互作用将成为人们关注的热点。

The research progress of solid electrolyte interface (SEI) film in lithium ion batteries is reviewed. Based on the mechanism and models of SEI,the possible effect factors on the SEI film and its modification methods are given. The applications of different analysis technology, especially the in situ analysis technology are discussed. The SEI film formed on cathode surface and the interaction between electrodes based on aqueous binding materials and electrolyte solution would be the hotspot in the future.