电源技术2025，Vol.49Issue(5)：911-915,5.DOI:10.3969/j.issn.1002-087X.2025.05.003
锂离子电池SEI/锂枝晶与死锂形成机理分析及研究进展
Mechanism analysis and research progress of SEI film/lithium dendrite growth and dead lithium formation in lithium ion batteries
摘要
Abstract
Excessive current density and high roughness of electrode surface during charging and dis-charging of lithium ion batteries will lead to uneven lithium deposition.The growth of lithium den-drites will puncture the SEI film(Solid Electrolyte Interface film)formed by the reaction of the an-ode material with the electrolyte.Lead to direct contact between lithium dendrites and electrolyte.Part of the dendritic fracture generates lithium metal particles.Part of the electrolyte and the con-tinuous side reaction to produce lithium compounds,that is,dead lithium.It has a great influence on the safety and performance of lithium batteries.At present,the problems such as lithium dendrites and dead lithium in the SEI film are still not effectively solved.In this paper,the formation mecha-nism of SEI film,lithium dendrites and dead lithium in lithium batteries and some suppression meth-ods proposed at this stage are reviewed.The key problems and future development directions are dis-cussed.It provides a certain theoretical basis and practical guidance for the field of battery research.关键词
锂离子电池/锂枝晶/死锂/SEI膜/人工SEI膜Key words
lithium ion battery/lithium dendrite/dead lithium/SEI film/artificial SEI film分类
动力与电气工程引用本文复制引用
张佃平,徐登明,冯晨,王祚,陈琪..锂离子电池SEI/锂枝晶与死锂形成机理分析及研究进展[J].电源技术,2025,49(5):911-915,5.基金项目
宁夏自然科学基金项目(2024AAC03047) （2024AAC03047）
宁夏重点研发计划(引才专项)(2023BSB03033) （引才专项）
