摘要
锂离子电池长时间使用过程中因为反复的充放电而出现材料及界面损伤,如锂金属负极因表面锂枝晶的生长刺破隔膜造成电池内部短路、高比容量硅负极因体积膨胀收缩效应导致电极结构破裂等。具有自愈能力的聚合物材料可以应对锂枝晶生长和其它机械性裂纹的产生,显著提高锂离子电池的安全性,延长使用寿命。在阐述自愈机制的基础上,对自愈聚合物材料在锂离子电池领域的应用进行了综述,并向粘接剂、复合电解质、人工界面层(保护涂层)展开,为下一代高安全性、高性能和长使用寿命的锂离子电池自愈聚合物材料的研究提供借鉴。
During the long-term use of lithium-ion batteries(LiBs),damage in material and interface occurs due to repeated charge and discharge.For example,the growth of lithium dendrites on the surface of lithium anode may pierce the membrane,causing the internal short circuit of the battery;the structure of silicon anode with high specific capacity may be broken due to the effect of volume expansion and contraction and so on.Polymer materials with self-healing ability can cope with the growth of lithium dendrites and other mechanical cracks,which can significantly improve the safety and cycling life of LiBs.In this paper,we review the application of self-healing polymer materials in LiBs field on the basis of self-healing mechanism,involving binders,composite electrolytes,and artificial interface layer(protective coating).This review provides a reference for the research of the next generation of self-healing polymer materials with high safety,high performance,and long cycling life for LiBs.
作者
柳泽林
付祥南
陈荷莲
刘学清
刘继延
杨克聪
郭庆中
刘志宏
LIU Zelin;FU Xiangnan;CHEN Helian;LIU Xueqing;LIU Jiyan;YANG Kecong;GUO Qingzhong;LIU Zhihong(Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education,School of Chemistry and Environmental Engineering,Jianghan University,Wuhan 430056,China;Hubei Key Laboratory of Plasma Chemistry and New Materials,School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205,China)
出处
《化学与生物工程》
CAS
2021年第8期1-8,24,共9页
Chemistry & Bioengineering
基金
国家自然科学基金项目(51872127)
中央引导地方科技发展专项(2019ZYYD005)
湖北省重点研发计划重点项目(2020BAA030)
湖北省楚天学者计划
江汉大学光电化学材料与器件教育部重点实验室开放课题基金项目(JDGD-202008)。
关键词
自愈聚合物
自愈机理
锂离子电池
聚合物电解质
self-healing polymer
self-healing mechanism
lithium-ion battery
polymer electrolyte
