Softening by electrochemical reaction-induced dislocations in lithium-ion batteries

Ma, Zengsheng; Xie, Zhoucan; Wang, Yan; Lu, Chunsheng

doi:10.1016/j.scriptamat.2016.08.032

Cited by 26 publications

(8 citation statements)

References 37 publications

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“…As is known, profiting from the strong polarity of Fe–X bonds, Fe-based samples have always been used as catalysts in Li–S systems to accelerate the transformation from LiPSs (liquid) to LiPSs (solid). 25,26,81 Compared to the cycling stability in Fig. 4a, the increased stability was detected at a high current density in Fig.…”

Section: Resultsmentioning

confidence: 88%

Triggering highly conductive FePSe₃ with Cu-based coordination towards all-climate ultrafast sodium ion storage

et al. 2022

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Section: Resultsmentioning

confidence: 88%

Triggering highly conductive FePSe₃ with Cu-based coordination towards all-climate ultrafast sodium ion storage

et al. 2022

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“…Typical examples of systems obeying ICR diffusion are LiSi, [7,11,15,28] NaSi, [29,30] NaP, [31] and NaSb. [23,32] Conversely, some systems, such as NaSn, LiSnO 2 , [33] and possibly LiSn, [34] NaBi (unpublished data), and NaPb (unpublished data), obey diffusion kinetics controlled by the migration rate of the propagating interface (termed the "diffusion-controlled reaction" (DCR)).…”

Section: Effects Of Sn Pillar Size On Na Diffusion and Sld Behaviorsmentioning

confidence: 99%

Diffusion Along Dislocations Mitigates Self‐Limiting Na Diffusion in Crystalline Sn

Byeon

Ahn

Lee

2020

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The diffusion of carrier ions in alloying anodes often develops compressive stresses in front of the propagating interface, suppressing the carrier‐ion diffusion and limiting their full penetration into alloying anodes during battery cycles. This phenomenon, termed “self‐limiting diffusion (SLD)”, reduces the rate performance of batteries and hinders the full usage of anode materials. However, SLD is mitigated in some systems where tensile residual stresses develop at the interface, causing them to manifest significantly improved rate performance and energy capacity. Here, a comparative study of LiSi and NaSn systems to elucidate how the differing diffusion kinetics displayed by the two systems can influence SLD behaviors and the rate performance of batteries is performed. Experiments show that the Na diffusion into soft Sn crystals induces tensile stresses near the interface, promoting the nucleation of high‐density dislocations. Thus‐formed dislocations facilitate Na diffusion at ultrafast rates by providing pathways for dislocation pipe diffusion and alleviate SLD, making crystalline Sn suitable for fast‐charging anode material. The outcomes of this study, while filling the knowledge gaps on the reasons for SLD, offer some guidelines for the appropriate choice of potential anode materials with superior rate performance and energy capacity suitable for future applications.

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“…In order to study the microstructural evolution during lithiation with irradiation, it is necessary to consider the migration of phase boundaries. Thus, a series of one-dimensional step-like profiles of Li-ion distribution with the flexible sigmoid function are assumed to simulate the movement of a sharp boundary between unlithiation and lithiation phases [26,68], viz.…”

Section: Elasto-plastic Deformation During Lithiationmentioning

confidence: 99%

A constitutive model coupling irradiation with two-phase lithiation for lithium-ion battery electrodes

Xie

Wang

et al. 2019

Philosophical Magazine

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When lithium-ion batteries serve in extreme environments like space, severe irradiation might induce significant decay of the electrochemical performances and mechanical properties. In this paper, an electrochemical-irradiated constitutive model is proposed to explore the evolution of dislocation, defect and stress in electrodes during a twophase lithiation process. The results from the analytic formulation and finite difference calculations show that, as Li intercalation proceeding, the hoop stress in the surface of a spherical particle converts from compression into tension because the large lithiation strain and plastic yielding at the front pushes out the material behind it. And the plastic flow resistance continuously increases with increasing irradiation dose result from the impediment of a defect to dislocation glide. There is a clear peak in the distribution of stress at yielding locations due to the competition between dislocations multiplication and defects annihilation. The model is meaningful for thoroughly understanding the micro-mechanism of lithiation deformation and provides a guideline for predicting their mechanical behaviours of lithium-ion batteries in unconventional environment.

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Softening by electrochemical reaction-induced dislocations in lithium-ion batteries

Cited by 26 publications

References 37 publications

Triggering highly conductive FePSe₃ with Cu-based coordination towards all-climate ultrafast sodium ion storage

Triggering highly conductive FePSe₃ with Cu-based coordination towards all-climate ultrafast sodium ion storage

Diffusion Along Dislocations Mitigates Self‐Limiting Na Diffusion in Crystalline Sn

A constitutive model coupling irradiation with two-phase lithiation for lithium-ion battery electrodes

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Softening by electrochemical reaction-induced dislocations in lithium-ion batteries

Cited by 26 publications

References 37 publications

Triggering highly conductive FePSe3 with Cu-based coordination towards all-climate ultrafast sodium ion storage

Triggering highly conductive FePSe3 with Cu-based coordination towards all-climate ultrafast sodium ion storage

Diffusion Along Dislocations Mitigates Self‐Limiting Na Diffusion in Crystalline Sn

A constitutive model coupling irradiation with two-phase lithiation for lithium-ion battery electrodes

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Triggering highly conductive FePSe₃ with Cu-based coordination towards all-climate ultrafast sodium ion storage

Triggering highly conductive FePSe₃ with Cu-based coordination towards all-climate ultrafast sodium ion storage