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采用电化学阻抗谱(EIS)技术研究了锂/石墨软包体系中石墨表面固体电解质界面膜(SEI膜)在化成过程中的阻抗变化。结果表明,在化成过程中,石墨阻抗显著降低,对应着SEI膜形成过程,在随后的脱锂过程中,阻抗趋于稳定,对应着SEI膜结构及成分的有序化。
Abstract：Electrochemical impedance spectroscopy(EIS)was used to study the impedance changes of the solid electrolyte interface membrane(SEI)on the graphite surface during formation in the lithium/graphite pouch cell system.In the process of formation,the impedance of lithium/graphite battery decreases continuously.In the subsequent delithiation process,impedance remains stable,corresponding to the ordering of SEI structure and composition.
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基本信息:
中图分类号:TM912
引用信息:
[1]张峥,李丽娟,朱振东,等.SEI膜成膜过程阻抗变化研究[J].电池工业,2020,24(06):288-291.
基金信息:
国家重点研发计划项目（2016YFB0100304）
2020-12-25
2020-12-25