| Electrochemical-mechanical coupled lithium growth in fiber-structured electrodes | |
Zhang ZH(张泽卉); Wen JC(温济慈)1 ; Wei YJ(魏宇杰)1
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| Corresponding Author | Wen, Jici([email protected]) ; Wei, Yujie([email protected]) |
| Source Publication | JOURNAL OF ENERGY STORAGE
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| 2024-10-10 | |
| Volume | 99Pages:13 |
| ISSN | 2352-152X |
| Abstract | 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. |
| Keyword | Electrochemical-mechanical coupling Lithium growth Finite-element method Electroplating stress Fiber-structured electrode |
| DOI | 10.1016/j.est.2024.113370 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001302035900001 |
| WOS Keyword | STRESS GENERATION ; SILICON ; ANODE ; LITHIATION ; DIFFUSION ; NANOWIRES ; STRAIN ; PERFORMANCE ; PLASTICITY ; COMPOSITE |
| WOS Research Area | Energy & Fuels |
| WOS Subject | Energy & Fuels |
| Funding Project | 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] |
| Funding Organization | 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 |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Wen, Jici ; Wei, Yujie |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/96446 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang ZH,Wen JC,Wei YJ. Electrochemical-mechanical coupled lithium growth in fiber-structured electrodes[J]. JOURNAL OF ENERGY STORAGE,2024,99:13.Rp_Au:Wen, Jici, Wei, Yujie |
| APA | 张泽卉,温济慈,&魏宇杰.(2024).Electrochemical-mechanical coupled lithium growth in fiber-structured electrodes.JOURNAL OF ENERGY STORAGE,99,13. |
| MLA | 张泽卉,et al."Electrochemical-mechanical coupled lithium growth in fiber-structured electrodes".JOURNAL OF ENERGY STORAGE 99(2024):13. |
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