Diffusion-induced stress of electrode particles with spherically   isotropic elastic properties in lithium-ion batteries

doi:10.1007/s10008-016-3292-6

CORC > 北京大学 > 工学院

	Diffusion-induced stress of electrode particles with spherically isotropic elastic properties in lithium-ion batteries
	Zhang, Xing-yu ; Chen, Hao-sen ; Fang, Dai-ning
刊名	JOURNAL OF SOLID STATE ELECTROCHEMISTRY
	2016
关键词	Diffusion-induced stress Lithium-ion battery Anisotropy Spherical electrode Charging strategy THIN-FILMS LITHIATION SILICON FRACTURE DEFORMATION GENERATION LI
DOI	10.1007/s10008-016-3292-6
英文摘要	Mechanical degradation generated by crack nucleation and pulverization can lead to the capacity fade in lithium-ion batteries, which has been attributed to diffusion-induced stress inside battery electrodes in recent years. However, not much attention has been directly taken to the models of diffusion-induced stress for anisotropic electrodes. In this work, we develop an analytical model of diffusion-induced stress for spherically isotropic elastic electrodes under potentiostatic and galvanostatic operation. It is shown that the stresses depend strongly on the lithiation expansion coefficient ratio and the elastic modulus ratio of tangential direction to radial direction. The stresses have the different evolution under potentiostatic and galvanostatic control, but have a common feature that they are all affected by the initial condition. From the standpoint of mechanics, our results indicate that extracting more lithium before lithiation (or inserting lower lithium before delithiation) is a good strategy to minimize stress and thus enhance capacity retention for spherically isotropic electrodes.; National Natural Science Foundation of China [11572002]; SCI(E); EI; ARTICLE; chspla@163.com; 10; 2835-2845; 20
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/449989]
专题	工学院
推荐引用方式 GB/T 7714	Zhang, Xing-yu,Chen, Hao-sen,Fang, Dai-ning. Diffusion-induced stress of electrode particles with spherically isotropic elastic properties in lithium-ion batteries[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2016.
APA	Zhang, Xing-yu,Chen, Hao-sen,&Fang, Dai-ning.(2016).Diffusion-induced stress of electrode particles with spherically isotropic elastic properties in lithium-ion batteries.JOURNAL OF SOLID STATE ELECTROCHEMISTRY.
MLA	Zhang, Xing-yu,et al."Diffusion-induced stress of electrode particles with spherically isotropic elastic properties in lithium-ion batteries".JOURNAL OF SOLID STATE ELECTROCHEMISTRY (2016).