One-dimensional analysis of the coupling between diffusion and deformation in a bilayer electrode

Yaohong Suo; Fuqian Yang

doi:10.1007/s10409-018-0817-5

One-dimensional analysis of the coupling between diffusion and deformation in a bilayer electrode

Yaohong Suo, Fuqian Yang

Chemical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Diffusion-induced deformation during electrochemical cycling plays an important role in determining structural durability of the electrodes in lithium-ion batteries. In this work, we investigate the coupling between diffusion and stress in the boundary conditions of a bilayer electrode, and analyze the evolution of the lithium concentration and stress. Numerical simulations are performed under four different combinations of the boundary conditions between diffusion and mechanical deformation. The stress distributes uniformly in the bilayer electrode for all four cases. The concentration of lithium at the interface is discontinuous for the cases with fixed boundary conditions and is continuous for the cases with a surface at stress-free state. For the bilayer electrode fixed at both surfaces, the magnitude of the stress in the bilayer electrode increases with the increase of the diffusion time. This study reveals the importance of incorporating the coupling between diffusion and stress in the boundary condition in the analysis of the structural durability of lithium-ion batteries and in the design of multilayered and/or gradient electrodes.

Original language	English
Pages (from-to)	589-599
Number of pages	11
Journal	Acta Mechanica Sinica/Lixue Xuebao
Volume	35
Issue number	3
DOIs	https://doi.org/10.1007/s10409-018-0817-5
State	Published - Jun 4 2019

Bibliographical note

Funding Information:
Yaohong Suo is grateful for the supports by the National Natural Science Foundation of China (Grant 11402054), the Natural Science Foundation of Fujian Provincial (Grant 2018J01663), and 2016 Open Projects of Key Laboratory for Strength and Vibration of Mechanical Structures (Grant SV2016-KF-18). Fuqian Yang is grateful for the support by the National Science Foundation (Grant CMMI-1634540, monitored by Dr. Khershed Cooper).

Funding Information:
Acknowledgements Yaohong Suo is grateful for the supports by the National Natural Science Foundation of China (Grant 11402054), the Natural Science Foundation of Fujian Provincial (Grant 2018J01663), and 2016 Open Projects of Key Laboratory for Strength and Vibration of Mechanical Structures (Grant SV2016-KF-18). Fuqian Yang is grateful for the support by the National Science Foundation (Grant CMMI-1634540, monitored by Dr. Khershed Cooper).

Publisher Copyright:
© 2018, The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences and Springer-Verlag GmbH Germany, part of Springer Nature.

Keywords

Bilayer electrode
Diffusion-induced deformation
Lithium-ion battery

ASJC Scopus subject areas

Computational Mechanics
Mechanical Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s10409-018-0817-5

Cite this

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title = "One-dimensional analysis of the coupling between diffusion and deformation in a bilayer electrode",

abstract = "Diffusion-induced deformation during electrochemical cycling plays an important role in determining structural durability of the electrodes in lithium-ion batteries. In this work, we investigate the coupling between diffusion and stress in the boundary conditions of a bilayer electrode, and analyze the evolution of the lithium concentration and stress. Numerical simulations are performed under four different combinations of the boundary conditions between diffusion and mechanical deformation. The stress distributes uniformly in the bilayer electrode for all four cases. The concentration of lithium at the interface is discontinuous for the cases with fixed boundary conditions and is continuous for the cases with a surface at stress-free state. For the bilayer electrode fixed at both surfaces, the magnitude of the stress in the bilayer electrode increases with the increase of the diffusion time. This study reveals the importance of incorporating the coupling between diffusion and stress in the boundary condition in the analysis of the structural durability of lithium-ion batteries and in the design of multilayered and/or gradient electrodes.",

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note = "Funding Information: Yaohong Suo is grateful for the supports by the National Natural Science Foundation of China (Grant 11402054), the Natural Science Foundation of Fujian Provincial (Grant 2018J01663), and 2016 Open Projects of Key Laboratory for Strength and Vibration of Mechanical Structures (Grant SV2016-KF-18). Fuqian Yang is grateful for the support by the National Science Foundation (Grant CMMI-1634540, monitored by Dr. Khershed Cooper). Funding Information: Acknowledgements Yaohong Suo is grateful for the supports by the National Natural Science Foundation of China (Grant 11402054), the Natural Science Foundation of Fujian Provincial (Grant 2018J01663), and 2016 Open Projects of Key Laboratory for Strength and Vibration of Mechanical Structures (Grant SV2016-KF-18). Fuqian Yang is grateful for the support by the National Science Foundation (Grant CMMI-1634540, monitored by Dr. Khershed Cooper). Publisher Copyright: {\textcopyright} 2018, The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences and Springer-Verlag GmbH Germany, part of Springer Nature.",

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N2 - Diffusion-induced deformation during electrochemical cycling plays an important role in determining structural durability of the electrodes in lithium-ion batteries. In this work, we investigate the coupling between diffusion and stress in the boundary conditions of a bilayer electrode, and analyze the evolution of the lithium concentration and stress. Numerical simulations are performed under four different combinations of the boundary conditions between diffusion and mechanical deformation. The stress distributes uniformly in the bilayer electrode for all four cases. The concentration of lithium at the interface is discontinuous for the cases with fixed boundary conditions and is continuous for the cases with a surface at stress-free state. For the bilayer electrode fixed at both surfaces, the magnitude of the stress in the bilayer electrode increases with the increase of the diffusion time. This study reveals the importance of incorporating the coupling between diffusion and stress in the boundary condition in the analysis of the structural durability of lithium-ion batteries and in the design of multilayered and/or gradient electrodes.

AB - Diffusion-induced deformation during electrochemical cycling plays an important role in determining structural durability of the electrodes in lithium-ion batteries. In this work, we investigate the coupling between diffusion and stress in the boundary conditions of a bilayer electrode, and analyze the evolution of the lithium concentration and stress. Numerical simulations are performed under four different combinations of the boundary conditions between diffusion and mechanical deformation. The stress distributes uniformly in the bilayer electrode for all four cases. The concentration of lithium at the interface is discontinuous for the cases with fixed boundary conditions and is continuous for the cases with a surface at stress-free state. For the bilayer electrode fixed at both surfaces, the magnitude of the stress in the bilayer electrode increases with the increase of the diffusion time. This study reveals the importance of incorporating the coupling between diffusion and stress in the boundary condition in the analysis of the structural durability of lithium-ion batteries and in the design of multilayered and/or gradient electrodes.

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One-dimensional analysis of the coupling between diffusion and deformation in a bilayer electrode

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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