Stress fields in hollow core-shell spherical electrodes of lithium ion   batteries

doi:10.1098/rspa.2014.0299

CORC > 北京大学 > 工学院

	Stress fields in hollow core-shell spherical electrodes of lithium ion batteries
	Liu, Yingjie ; Lv, Pengyu ; Ma, Jun ; Bai, Ruobing ; Duan, Hui Ling
刊名	proceedings of the royal society a mathematical physical and engineering sciences
	2014
关键词	lithium ion battery phase transformation hydrostatic stress surface/interface stress hollow electrode particles DIFFUSION-INDUCED STRESSES INTERCALATION-INDUCED STRESS THIN-FILM ELECTRODES NUMERICAL-SIMULATION THEORETICAL-ANALYSIS CRACK-PROPAGATION PHASE-TRANSITION PARTICLES CATHODE LI-1-DELTA-COO2
DOI	10.1098/rspa.2014.0299
英文摘要	This paper presents a comprehensive model coupling the effects of hydrostatic stress, surface/interface stress, phase transformation and the structure of electrodes. First, the governing equation of moving phase interface with hydrostatic stress is established. Under the effect of hydrostatic stress, phase transformation process is much faster, which means phase transformation time is overestimated in previous publications. Then, a cross-scale analysis is presented to investigate the size effect owing to hydrostatic stress, surface stress and interface stress separately, which concludes that the effect of hydrostatic stress is significant for the stress field in microelectrode particles, whereas that of surface/interface stress is highlighted in nano-ones. Finally, an electrochemical variable 'efficiency' (ratio of effective capacity over total capacity) is defined. The advantages of hollow structure electrodes on stress and efficiency are analysed. The present model is helpful for the material and structure design of electrodes of lithium ion batteries.; Multidisciplinary Sciences; SCI(E); 0; ARTICLE; hlduan@pku.edu.cn; 2172; 470
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/315743]
专题	工学院
推荐引用方式 GB/T 7714	Liu, Yingjie,Lv, Pengyu,Ma, Jun,et al. Stress fields in hollow core-shell spherical electrodes of lithium ion batteries[J]. proceedings of the royal society a mathematical physical and engineering sciences,2014.
APA	Liu, Yingjie,Lv, Pengyu,Ma, Jun,Bai, Ruobing,&Duan, Hui Ling.(2014).Stress fields in hollow core-shell spherical electrodes of lithium ion batteries.proceedings of the royal society a mathematical physical and engineering sciences.
MLA	Liu, Yingjie,et al."Stress fields in hollow core-shell spherical electrodes of lithium ion batteries".proceedings of the royal society a mathematical physical and engineering sciences (2014).