期刊
JOURNAL OF POWER SOURCES
卷 143, 期 1-2, 页码 203-211出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2004.11.037
关键词
Li-batteries; fracture mechanics; cracking
The formation of damage, which results from the large volume expansion of the active sites during electrochemical cycling, in rechargeable Li-batteries, is modelled from a fracture mechanics viewpoint to facilitate the selection of the most effective electrode materials and configurations. The present study is a first step towards examining stable cracking in such high-energy storage devices, by considering three different configurations at the nanoscale, which are currently at an experimental stage. As a result, stability diagrams concerning crack growth are constructed and compared for the following cases: (a) the electrodes are thin films, (b) the Li-insertion sites in the anode are nanofibre-like inclusions, (c) the active sites in both electrodes are spherical. (c) 2004 Elsevier B.V. All rights reserved.
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