NDLI: Dislocation effect on diffusion-induced stress for lithiation in hollow spherical electrode

Content Provider	Springer Nature Link
Author	Zhu, Jianwei Zhou, Jianqiu Chen, Bingbing Liu, Zhijun Liu, Tong
Copyright Year	2015
Abstract	Most lithium-ion battery electrodes undergo large volume changes caused by lithium-ion diffusion within the host particles during insertion. The electrode failure can occur as a result of diffusion-induced stress (DIS). In this work, we will develop a new model to analyze DIS with the influence of dislocation in a spherical electrode. As simple one-dimension models, solid and hollow spherical electrode particles are investigated. The results show that the effect of dislocation can relieve the DIS and even make tensile stress to become compressive stress, which differs from the classical solutions. We also compare the stress of dislocation generation in hollow sphere and solid sphere. It is shown that dislocation-induced stress in hollow spherical electrode is larger than in solid spherical electrode. In addition, based on the analytic solutions, the effect of the wall thickness of hollow sphere on DIS and dislocation-induced stress will be discussed in the hollow spherical electrode during insertion. As the wall thickness of hollow spherical electrode decreases, dislocation-induced stress increases and DIS decreases. So, dislocation-induced stress and the wall thickness will be important factors for hollow spherical electrode. These factors may help guide the development of new materials for lithium-ion battery with enhanced mechanical durability and identify battery operating conditions.
Starting Page	37
Ending Page	46
Page Count	10
File Format	PDF
ISSN	14328488
Journal	Journal of Solid State Electrochemistry
Volume Number	20
Issue Number	1
e-ISSN	14330768
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-08-08
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hollow spherical electrode Dislocation-induced stress Diffusion-induced stress Insertion Physical Chemistry Electrochemistry Energy Storage Characterization and Evaluation of Materials Analytical Chemistry Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Materials Science Electrical and Electronic Engineering Electrochemistry

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