锂电池基础科学问题(V)----电池界面

doi:10.3969/j.issn.2095-4239.2013.05.009

摘要/Abstract

摘要： 电池中固液界面的性质对锂离子电池充放电效率,能量效率,能量密度,功率密度,循环性,服役寿命,安全性,自放电等特性具有重要的影响.对界面问题的研究是锂离子电池基础研究的核心.本文小结了锂离子电池电极表面固体电解质中间相(SEI)形成机理及对其组成结构的认识,介绍了近年来对锂离子输运机制,SEI膜改性研究以及透射电镜(TEM)及原子力显微镜(AFM)中力曲线等实验技术来分析SEI膜的形貌,厚度,覆盖度及力学性能等实验方法.

关键词: 界面, 固体电解质中间相膜, 表征, 锂离子电池

Abstract: Interfaces play an important role in determining coulombic efficiency, energy efficiency, energy density, power density, cycle performance, service life, safety and self-discharge rate of lithium-ion batteries. We first briefly summarize our understanding of the formation mechanisms and structure of solid electrolyte interphase (SEI). We then introduce experimental techniques for characterizing the SEI including transmission electron microscopy (TEM), atomic force microscopy (AFM), and TG-DSC-MS.

Key words: interface, solid electrolyte interphase, characterization, lithium ion batteries

中图分类号:

O646.21

郑杰允, 李泓. 锂电池基础科学问题(V)----电池界面[J]. 储能科学与技术, 2013, 2(5): 503-513.

ZHENG Jieyun, LI Hong. Fundamental scientific aspects of lithium batteries (V)----Interfaces[J]. Energy Storage Science and Technology, 2013, 2(5): 503-513.

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