摘要
电化学阻抗谱(EIS)是研究电极/电解质界面发生的电化学过程的最有力工具之一,广泛应用于研究锂离子在锂离子电池嵌合物电极活性材料中的嵌入和脱出过程。本文从分析嵌合物电极的EIS谱特征入手,探讨了电化学阻抗谱中各时间常数的归属问题,重点讨论了与锂离子嵌脱过程相关的动力学参数,如电荷传递电阻、活性材料的电子电阻、扩散以及锂离子扩散迁移通过固体电解质相界面膜(SEI膜)的电阻等,对电极极化电位和温度的依赖关系。
Electrochemical impedance spectroscopy（EIS） is one of the most powerful tools to analyze electrochemical processes occurring at electrode/electrolyte interfaces,and has been widely used to analyze the insertion /desertion process of lithium ion in the intercalation electrode for lithium ion battery.In this paper,the ascription of each time constant of EIS spectra is discussed,based on analyzing the common EIS features of intercalation electrode.The kinetic parameters in the lithium ion insertion/desertion,dependent on temperature and electrode polarization,such as the charge transfer resistance,the electronic resistance of activated material,the resistance of SEI film that lithium ion transferring through,are also discussed based on the theoretical analysis.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2010年第6期1044-1057,共14页
Progress in Chemistry
基金
国家重点基础研究发展计划(973)项目(No.2009CB220102)
中国矿业大学青年科技基金项目(No.ON080282)资助
关键词
锂离子电池
电化学阻抗谱
SEI
膜
电子电导率
电荷传递电阻
lithium ion batteries
electrochemical impendance spectroscopy（EIS）
SEI film
electronic conductivity
charge transfer resistance
