| Examining the validity of Stoney-equation for in-situ stress measurements in thin film electrodes using a large-deformation finite-element procedure |
| Wen JC(温济慈) ; Wei YJ(魏宇杰); Cheng YT
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| 发表期刊 | JOURNAL OF POWER SOURCES
 |
| 2018-05-31
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| 卷号 | 387页码:126-134 |
| ISSN | 0378-7753
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| 摘要 | During the lithiation and delithiation of a thin film electrode, stress in the electrode is deduced from the curvature change of the film using the Stoney equation. The accuracy of such a measurement is conditioned on the assumptions that (a) the mechanical properties of the electrode remain unchanged during lithiation and (b) small deformation holds. Here, we demonstrate that the change in elastic properties can influence the measurement of the stress in thin film electrodes. We consider the coupling between diffusion and deformation during lithiation and delithiation of thin film electrodes and implement the constitutive behavior in a finite deformation finite element procedure. We demonstrate that both the variation in elastic properties in thin film electrodes and finite-deformation during lithiation and delithiation would challenge the applicability of the Stoney-equation for in-situ stress measurements of thin film electrodes. |
| 关键词 | Thin Film Electrode
In-situ Stress Measurement
Stoney Equation
Diffusion Stress Coupling
Finite-deformation Finite Element
|
| DOI | 10.1016/j.jpowsour.2018.03.052
|
| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000430899800016
|
| 关键词[WOS] | INTERCALATION-INDUCED STRESS
; LITHIUM INSERTION
; SILICON
; DIFFUSION
; GENERATION
; PARTICLES
; EVOLUTION
; MODULUS
; DEVICES
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| WOS研究方向 | Chemistry
; Electrochemistry
; Energy & Fuels
; Materials Science
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| WOS类目 | Chemistry, Physical
; Electrochemistry
; Energy & Fuels
; Materials Science, Multidisciplinary
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| 项目资助者 | National Natural Science Foundation of China (NSFC)(11425211)
; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB22020200)
; US National Science Foundation(1355438)
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| 论文分区 | 一类
|
| 力学所作者排名 | 1
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| 引用统计 |
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| 文献类型 | 期刊论文
|
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/77478
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| 专题 | 非线性力学国家重点实验室
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推荐引用方式
GB/T 7714 |
Wen JC,Wei YJ,Cheng YT. Examining the validity of Stoney-equation for in-situ stress measurements in thin film electrodes using a large-deformation finite-element procedure[J]. JOURNAL OF POWER SOURCES,2018,387:126-134.
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| APA |
温济慈,魏宇杰,&Cheng YT.(2018).Examining the validity of Stoney-equation for in-situ stress measurements in thin film electrodes using a large-deformation finite-element procedure.JOURNAL OF POWER SOURCES,387,126-134.
|
| MLA |
温济慈,et al."Examining the validity of Stoney-equation for in-situ stress measurements in thin film electrodes using a large-deformation finite-element procedure".JOURNAL OF POWER SOURCES 387(2018):126-134.
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