期刊
JOURNAL OF POWER SOURCES
卷 342, 期 -, 页码 939-946出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2016.12.121
关键词
Lithium ion battery; NMC; Dilatometry; Swelling; Expansion; Graphite
资金
- Robert Bosch GmbH
The technique of electrochemical in-situ dilatometry is applied to study the intercalation induced macroscopic expansion of electrodes for lithium-ion batteries. A full cell setup is used to investigate the expansion under real conditions. This method enables in-situ measurement of expansion under defined pressure, using conventional electrodes, separators and electrolytes. To understand the influence of the microstructure, the swelling behavior of different LiNi1/3 Mn-1/3 Co-1/3 O-2 (NMC) positive electrodes and graphite negative electrodes is measured and systematically analyzed. A theoretical approach for assessment of reversible electrode displacement in a full cell is developed, by using a low number of material specific input parameters. Electrochemical in-situ dilatometry is able to show differences in irreversible dilation depending on electrode design and therefore it is a powerful technique for stability and lifetime assessment. (C) 2017 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据