Electrochemical-mechanical coupled lithium growth in fiber-structured electrodes
文献类型：期刊论文
| 作者 | Zhang, Zehui; Wen, Jici2 ; Wei, Yujie2; Wei YJ(魏宇杰); Wen JC(温济慈)
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| 刊名 | JOURNAL OF ENERGY STORAGE
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| 出版日期 | 2024-10-10 |
| 卷号 | 99页码:13 |
| 关键词 | Electrochemical-mechanical coupling Lithium growth Finite-element method Electroplating stress Fiber-structured electrode |
| ISSN号 | 2352-152X |
| DOI | 10.1016/j.est.2024.113370 |
| 通讯作者 | Wen, Jici(wenjici@lnm.imech.ac.cn) ; Wei, Yujie(yujie_wei@lnm.imech.ac.cn) |
| 英文摘要 | Lithium plating (stripping) on the electrode surface and embedding inside the electrode occur simultaneously in lithium-ion batteries during fast (dis)charging, which involves both deposition and diffusion mechanisms. The paper presents a developed finite-element procedure that accommodates these two mechanisms, facilitating the modeling of the (dis)charging process in electrodes. The framework, which integrates interface electrochemical reaction kinetics, electrochemical-mechanical coupling, comprehensive constitutive models for silicon/graphite/ lithium, and a surface growth re-meshing algorithm, is capable of real-time simulation of the surface deposition and coupled diffusion-deformation processes on the electrode substrate. We examined the effects of charging rate, diffusion rate and volumetric expansion on the stress of the plated lithium layer in a fiber-structured electrode. By accounting for creep in lithium metal and subsequent stress relaxation, we obtained timedependent stress profiles in the plated lithium layer. As an application, we quantified electroplating stresses in both fiber-structured graphite and silicon electrodes. Taking the silicon electrode as a model case, we demonstrate that hollow fiber structural electrodes can also alleviate the stress in the surface lithium-plating layer. The numerical framework may be further applied to explorations for the optimization of electrode structures in advanced high performance lithium-ion batteries. |
| WOS关键词 | STRESS GENERATION ; SILICON ; ANODE ; LITHIATION ; DIFFUSION ; NANOWIRES ; STRAIN ; PERFORMANCE ; PLASTICITY ; COMPOSITE |
| 资助项目 | National Natural Science Foundation of China[12002343] ; National Natural Science Foundation of China (NSFC) Basic Science Center for 'Multiscale Problems in Nonlinear Mechanics'[11988102] ; Young Elite Scientists Sponsorship Program by the Chinese Society of Theoretical and Applied Mechanics[CSTAM2022-XSC-QN4] ; R & D Program of Beijing Municipal Education Commission[KM202311232008] |
| WOS研究方向 | Energy & Fuels |
| 语种 | 英语 |
| WOS记录号 | WOS:001302035900001 |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China (NSFC) Basic Science Center for 'Multiscale Problems in Nonlinear Mechanics' ; Young Elite Scientists Sponsorship Program by the Chinese Society of Theoretical and Applied Mechanics ; R & D Program of Beijing Municipal Education Commission |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96445]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Wen, Jici; Wei, Yujie |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zehui,Wen, Jici,Wei, Yujie,et al. Electrochemical-mechanical coupled lithium growth in fiber-structured electrodes[J]. JOURNAL OF ENERGY STORAGE,2024,99:13. |
| APA | Zhang, Zehui,Wen, Jici,Wei, Yujie,魏宇杰,&温济慈.(2024).Electrochemical-mechanical coupled lithium growth in fiber-structured electrodes.JOURNAL OF ENERGY STORAGE,99,13. |
| MLA | Zhang, Zehui,et al."Electrochemical-mechanical coupled lithium growth in fiber-structured electrodes".JOURNAL OF ENERGY STORAGE 99(2024):13. |
入库方式： OAI收割
来源：力学研究所
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