Chemical Strain of Graphite-Based Anode during Lithiation and Delithiation at Various Temperatures

Electrochemical lithiation/delithiation of electrodes induces chemical strain cycling that causes fatigue and other harmful influences on lithium-ion batteries. In this work, a homemade in situ measurement device was used to characterize simultaneously chemical strain and nominal state of charge, es...

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Autores principales:	Zeyu Xu, Xiuling Shi, Xiaoqiang Zhuang, Zihan Wang, Sheng Sun, Kaikai Li, Tong-Yi Zhang
Formato:	article
Lenguaje:	EN
Publicado:	American Association for the Advancement of Science 2021
Materias:	Science Q
Acceso en línea:	https://doaj.org/article/d16ae77d283f4d00b317dfc0937ca063
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spelling	oai:doaj.org-article:d16ae77d283f4d00b317dfc0937ca0632021-11-08T08:26:28ZChemical Strain of Graphite-Based Anode during Lithiation and Delithiation at Various Temperatures2639-527410.34133/2021/9842391https://doaj.org/article/d16ae77d283f4d00b317dfc0937ca0632021-01-01T00:00:00Zhttp://dx.doi.org/10.34133/2021/9842391https://doaj.org/toc/2639-5274Electrochemical lithiation/delithiation of electrodes induces chemical strain cycling that causes fatigue and other harmful influences on lithium-ion batteries. In this work, a homemade in situ measurement device was used to characterize simultaneously chemical strain and nominal state of charge, especially residual chemical strain and residual nominal state of charge, in graphite-based electrodes at various temperatures. The measurements indicate that raising the testing temperature from 20°C to 60°C decreases the chemical strain at the same nominal state of charge during cycling, while residual chemical strain and residual nominal state of charge increase with the increase of temperature. Furthermore, a novel electrochemical-mechanical model is developed to evaluate quantitatively the chemical strain caused by a solid electrolyte interface (SEI) and the partial molar volume of Li in the SEI at different temperatures. The present study will definitely stimulate future investigations on the electro-chemo-mechanics coupling behaviors in lithium-ion batteries.Zeyu XuXiuling ShiXiaoqiang ZhuangZihan WangSheng SunKaikai LiTong-Yi ZhangAmerican Association for the Advancement of SciencearticleScienceQENResearch, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Science Q
spellingShingle	Science Q Zeyu Xu Xiuling Shi Xiaoqiang Zhuang Zihan Wang Sheng Sun Kaikai Li Tong-Yi Zhang Chemical Strain of Graphite-Based Anode during Lithiation and Delithiation at Various Temperatures
description	Electrochemical lithiation/delithiation of electrodes induces chemical strain cycling that causes fatigue and other harmful influences on lithium-ion batteries. In this work, a homemade in situ measurement device was used to characterize simultaneously chemical strain and nominal state of charge, especially residual chemical strain and residual nominal state of charge, in graphite-based electrodes at various temperatures. The measurements indicate that raising the testing temperature from 20°C to 60°C decreases the chemical strain at the same nominal state of charge during cycling, while residual chemical strain and residual nominal state of charge increase with the increase of temperature. Furthermore, a novel electrochemical-mechanical model is developed to evaluate quantitatively the chemical strain caused by a solid electrolyte interface (SEI) and the partial molar volume of Li in the SEI at different temperatures. The present study will definitely stimulate future investigations on the electro-chemo-mechanics coupling behaviors in lithium-ion batteries.
format	article
author	Zeyu Xu Xiuling Shi Xiaoqiang Zhuang Zihan Wang Sheng Sun Kaikai Li Tong-Yi Zhang
author_facet	Zeyu Xu Xiuling Shi Xiaoqiang Zhuang Zihan Wang Sheng Sun Kaikai Li Tong-Yi Zhang
author_sort	Zeyu Xu
title	Chemical Strain of Graphite-Based Anode during Lithiation and Delithiation at Various Temperatures
title_short	Chemical Strain of Graphite-Based Anode during Lithiation and Delithiation at Various Temperatures
title_full	Chemical Strain of Graphite-Based Anode during Lithiation and Delithiation at Various Temperatures
title_fullStr	Chemical Strain of Graphite-Based Anode during Lithiation and Delithiation at Various Temperatures
title_full_unstemmed	Chemical Strain of Graphite-Based Anode during Lithiation and Delithiation at Various Temperatures
title_sort	chemical strain of graphite-based anode during lithiation and delithiation at various temperatures
publisher	American Association for the Advancement of Science
publishDate	2021
url	https://doaj.org/article/d16ae77d283f4d00b317dfc0937ca063
work_keys_str_mv	AT zeyuxu chemicalstrainofgraphitebasedanodeduringlithiationanddelithiationatvarioustemperatures AT xiulingshi chemicalstrainofgraphitebasedanodeduringlithiationanddelithiationatvarioustemperatures AT xiaoqiangzhuang chemicalstrainofgraphitebasedanodeduringlithiationanddelithiationatvarioustemperatures AT zihanwang chemicalstrainofgraphitebasedanodeduringlithiationanddelithiationatvarioustemperatures AT shengsun chemicalstrainofgraphitebasedanodeduringlithiationanddelithiationatvarioustemperatures AT kaikaili chemicalstrainofgraphitebasedanodeduringlithiationanddelithiationatvarioustemperatures AT tongyizhang chemicalstrainofgraphitebasedanodeduringlithiationanddelithiationatvarioustemperatures
_version_	1718442757992742912

Chemical Strain of Graphite-Based Anode during Lithiation and Delithiation at Various Temperatures

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