In-operando deformation studies on the mechano-electrochemical mechanism in free-standing MWCNTs/V                         2                         O                         5                          lithium ion battery electrode

Zhuo Wang; Huiyu Huang; Li Zeng; Yuncheng Wang; Liang Lv; Cuiying Dai; Weiguo Mao; Xi Chen; Daining Fang

doi:10.1016/j.electacta.2019.03.039

In-operando deformation studies on the mechano-electrochemical mechanism in free-standing MWCNTs/V ₂ O ₅ lithium ion battery electrode

Zhuo Wang, Huiyu Huang, Li Zeng, Yuncheng Wang, Liang Lv, Cuiying Dai^*, Weiguo Mao, Xi Chen, Daining Fang

^*Corresponding author for this work

Institute of Advanced Structure Technology

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

24 Citations (Scopus)

Abstract

Free-standing MWCNTs/V ₂ O ₅ nanobelts composite architecture electrodes for lithium ion batteries (LIBs) are prepared based on hydrothermal method, electrostatic self-assembly approach and vacuum filtration deposition technique. Such kind of nanoarchitecture enhances the electrochemical kinetics and structural stability of V ₂ O ₅ cathodes. The distribution and evolution features of plane strains in free-standing MWCNTs/V ₂ O ₅ cathodes surface are in-operando monitored by using digital image correlation method and systematically discussed. The strain results show that the evolution of strain against potential obeys general Arrhenius relation under galvanostatic charge-discharge cycling. Considering the effect of lithium ion concentration, the elastic modulus of 20 wt% MWCNTs/V ₂ O ₅ electrode is confirmed via nanoindentation. The evolutions of average plane stresses in the free-standing MWCNTs/V ₂ O ₅ electrodes, as well as the contributions of mechanical and electrochemical components, are evaluated and discussed by mechano-electrochemical constitutive equation during electrochemical process. The analytical methods used in this article are universal for revealing the electrode mechano-electrochemical failure mechanism in LIBs.

Original language	English
Pages (from-to)	101-115
Number of pages	15
Journal	Electrochimica Acta
Volume	305
DOIs	https://doi.org/10.1016/j.electacta.2019.03.039
Publication status	Published - 10 May 2019

Keywords

Carbon nanotube
Digital image correlation
Lithium ion battery
Mechano-electrochemical coupling
Vanadium pentoxide

UN SDGs

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

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10.1016/j.electacta.2019.03.039

Cite this

Wang, Z., Huang, H., Zeng, L., Wang, Y., Lv, L., Dai, C., Mao, W., Chen, X., & Fang, D. (2019). In-operando deformation studies on the mechano-electrochemical mechanism in free-standing MWCNTs/V ₂ O ₅ lithium ion battery electrode Electrochimica Acta, 305, 101-115. https://doi.org/10.1016/j.electacta.2019.03.039

Wang, Zhuo ; Huang, Huiyu ; Zeng, Li et al. / In-operando deformation studies on the mechano-electrochemical mechanism in free-standing MWCNTs/V ₂ O ₅ lithium ion battery electrode In: Electrochimica Acta. 2019 ; Vol. 305. pp. 101-115.

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title = " In-operando deformation studies on the mechano-electrochemical mechanism in free-standing MWCNTs/V 2 O 5 lithium ion battery electrode ",

abstract = " Free-standing MWCNTs/V 2 O 5 nanobelts composite architecture electrodes for lithium ion batteries (LIBs) are prepared based on hydrothermal method, electrostatic self-assembly approach and vacuum filtration deposition technique. Such kind of nanoarchitecture enhances the electrochemical kinetics and structural stability of V 2 O 5 cathodes. The distribution and evolution features of plane strains in free-standing MWCNTs/V 2 O 5 cathodes surface are in-operando monitored by using digital image correlation method and systematically discussed. The strain results show that the evolution of strain against potential obeys general Arrhenius relation under galvanostatic charge-discharge cycling. Considering the effect of lithium ion concentration, the elastic modulus of 20 wt% MWCNTs/V 2 O 5 electrode is confirmed via nanoindentation. The evolutions of average plane stresses in the free-standing MWCNTs/V 2 O 5 electrodes, as well as the contributions of mechanical and electrochemical components, are evaluated and discussed by mechano-electrochemical constitutive equation during electrochemical process. The analytical methods used in this article are universal for revealing the electrode mechano-electrochemical failure mechanism in LIBs.",

keywords = "Carbon nanotube, Digital image correlation, Lithium ion battery, Mechano-electrochemical coupling, Vanadium pentoxide",

author = "Zhuo Wang and Huiyu Huang and Li Zeng and Yuncheng Wang and Liang Lv and Cuiying Dai and Weiguo Mao and Xi Chen and Daining Fang",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = may,

day = "10",

doi = "10.1016/j.electacta.2019.03.039",

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Wang, Z, Huang, H, Zeng, L, Wang, Y, Lv, L, Dai, C, Mao, W, Chen, X & Fang, D 2019, ' In-operando deformation studies on the mechano-electrochemical mechanism in free-standing MWCNTs/V ₂ O ₅ lithium ion battery electrode ', Electrochimica Acta, vol. 305, pp. 101-115. https://doi.org/10.1016/j.electacta.2019.03.039

In-operando deformation studies on the mechano-electrochemical mechanism in free-standing MWCNTs/V ₂ O ₅ lithium ion battery electrode . / Wang, Zhuo; Huang, Huiyu; Zeng, Li et al.
In: Electrochimica Acta, Vol. 305, 10.05.2019, p. 101-115.

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

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T1 - In-operando deformation studies on the mechano-electrochemical mechanism in free-standing MWCNTs/V 2 O 5 lithium ion battery electrode

AU - Wang, Zhuo

AU - Huang, Huiyu

AU - Zeng, Li

AU - Wang, Yuncheng

AU - Lv, Liang

AU - Dai, Cuiying

AU - Mao, Weiguo

AU - Chen, Xi

AU - Fang, Daining

PY - 2019/5/10

Y1 - 2019/5/10

N2 - Free-standing MWCNTs/V 2 O 5 nanobelts composite architecture electrodes for lithium ion batteries (LIBs) are prepared based on hydrothermal method, electrostatic self-assembly approach and vacuum filtration deposition technique. Such kind of nanoarchitecture enhances the electrochemical kinetics and structural stability of V 2 O 5 cathodes. The distribution and evolution features of plane strains in free-standing MWCNTs/V 2 O 5 cathodes surface are in-operando monitored by using digital image correlation method and systematically discussed. The strain results show that the evolution of strain against potential obeys general Arrhenius relation under galvanostatic charge-discharge cycling. Considering the effect of lithium ion concentration, the elastic modulus of 20 wt% MWCNTs/V 2 O 5 electrode is confirmed via nanoindentation. The evolutions of average plane stresses in the free-standing MWCNTs/V 2 O 5 electrodes, as well as the contributions of mechanical and electrochemical components, are evaluated and discussed by mechano-electrochemical constitutive equation during electrochemical process. The analytical methods used in this article are universal for revealing the electrode mechano-electrochemical failure mechanism in LIBs.

AB - Free-standing MWCNTs/V 2 O 5 nanobelts composite architecture electrodes for lithium ion batteries (LIBs) are prepared based on hydrothermal method, electrostatic self-assembly approach and vacuum filtration deposition technique. Such kind of nanoarchitecture enhances the electrochemical kinetics and structural stability of V 2 O 5 cathodes. The distribution and evolution features of plane strains in free-standing MWCNTs/V 2 O 5 cathodes surface are in-operando monitored by using digital image correlation method and systematically discussed. The strain results show that the evolution of strain against potential obeys general Arrhenius relation under galvanostatic charge-discharge cycling. Considering the effect of lithium ion concentration, the elastic modulus of 20 wt% MWCNTs/V 2 O 5 electrode is confirmed via nanoindentation. The evolutions of average plane stresses in the free-standing MWCNTs/V 2 O 5 electrodes, as well as the contributions of mechanical and electrochemical components, are evaluated and discussed by mechano-electrochemical constitutive equation during electrochemical process. The analytical methods used in this article are universal for revealing the electrode mechano-electrochemical failure mechanism in LIBs.

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Wang Z, Huang H, Zeng L, Wang Y, Lv L, Dai C et al. In-operando deformation studies on the mechano-electrochemical mechanism in free-standing MWCNTs/V ₂ O ₅ lithium ion battery electrode Electrochimica Acta. 2019 May 10;305:101-115. doi: 10.1016/j.electacta.2019.03.039