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Modeling diffusion-induced stress on two-phase lithiation in lithium-ion batteries
Wu H1; Xie ZC2; Wang Y3,4; Lu CS4; Ma ZS1

Capacity fade induced by chemo-mechanical degradation during charge-discharge cycles is the bottleneck in the design of high-performance batteries, especially high-capacity electrode materials. In this paper, a flexible sigmoid function is used to create the two-phase electrochemical lithiation profile, describing a sharp phase boundary that separates the pristine core from the lithiated shell of an electrode particle. According to such a phase transition, an analytical solution of the stress evolution is obtained by introducing an electrochemical reaction layer into the plastic model. Finally, based on the theory of diffusion-induced stress and the energy principle, we determine the critical thickness of radius of a lithiated layer, at which fracture occurs.

KeywordLithium-ion Battery Two-phase Lithiation Fracture Critical Size
Indexed BySCI ; EI
WOS IDWOS:000440116300024
WOS KeywordLong Cycle Life ; Silicon Electrodes ; Crystalline Silicon ; Electrochemical Lithiation ; Initial Lithiation ; Amorphous-silicon ; Hollow Cylinder ; Thin-films ; Deformation ; Nanowires
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationNational Natural Science Foundation of China(11372267 ; 11402086 ; 11472141)
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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorMa ZS
Affiliation1.Xiangtan Univ, Natl Prov Lab Special Funct Thin Film Mat, Sch Mat Sci & Engn, Xiangtan 411105, Hunan, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
3.Hunan Univ Sci & Technol, Sch Informat & Elect Engn, Xiangtan 411201, Hunan, Peoples R China
4.Curtin Univ, Dept Mech Engn, Perth, WA 6845, Australia
Recommended Citation
GB/T 7714
Wu H,Xie ZC,Wang Y,et al. Modeling diffusion-induced stress on two-phase lithiation in lithium-ion batteries[J]. EUROPEAN JOURNAL OF MECHANICS A-SOLIDS,2018,71:320-325.
APA Wu H,Xie ZC,Wang Y,Lu CS,&Ma ZS.(2018).Modeling diffusion-induced stress on two-phase lithiation in lithium-ion batteries.EUROPEAN JOURNAL OF MECHANICS A-SOLIDS,71,320-325.
MLA Wu H,et al."Modeling diffusion-induced stress on two-phase lithiation in lithium-ion batteries".EUROPEAN JOURNAL OF MECHANICS A-SOLIDS 71(2018):320-325.
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