Modeling diffusion–induced stress on two-phase lithiation in lithium-ion batteries

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

doi:10.1016/j.euromechsol.2018.04.005

Cited by 26 publications

(12 citation statements)

References 35 publications

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“…Just as we proceeded in the galvanostatic case, we would like to see the effects of material properties of the constraining material on the electrochemical performance, as well as mechanical performance (which is demonstrated by the length-increase of the particle, similar to Section 3.1). Figure 11(a) shows the variation of SOC with time, for different values of 5,10), without (solid lines) and with (dashed lines) considering the effects of surface stress. The gap between the solid and the dashed lines reduces as the ratio of yield strengths increases.…”

Section: Potentiostatic Charging Conditionmentioning

confidence: 99%

“…Due to its large-scale applications ranging from electronic gadgets to aircrafts, the focus has now shifted towards improving the storage capacity and energy density of LIBs. In order to fulfill the growing demand for high storage capacity, high energy and power densities, silicon (Si) as an anode material, with a theoretical capacity of 4200 mAh g −1 , is the best replacement for traditionally-used graphite (having a theoretical specific capacity of 372 mAh g −1 ) [4][5][6]. The drawback associated with the usage of Si as anode is the large expansion in volume (upto 310 %) of the anode particles upon insertion of lithium, and back to original volume upon dis-insertion [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Rethinking battery degradation in presence of surface effects: mechanical versus electrochemical peformance mediated by charging condition

Sengupta¹,

Chakraborty²

2021

Preprint

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Surface stresses, in nano-sized anode particles undergoing chemomechanical interactions, have a relaxing effect on the diffusion-induced stresses thus improving the mechanical endurance of the particles, whereas, the compressive effect of surface stresses degrades the electrochemical performance. However, this straightforward prediction of an improved mechanical performance is challenged in this work. Silicon nanowires undergoing huge volumetric changes during lithiation, may undergo significant axial length-increase, which serves as an important criterion in determining the mechanical performance of SiNWs. Interestingly, surface stresses tend to reduce the length-increase under potentiostatic charging condition, but under galvanostatic charging, the length-increase gets enhanced, thus degrading the mechanical performance of the SiNWs. To further make the study more inclusive, the nanowire is modelled with a constraining material at its core, and a competitive analysis is presented for the overall performance of the anode particles under the combined effects of surface stresses and constraining material. The mathematical model is based on large deformation theory, considering two-way coupling of diffusion-induced stresses and stressenhanced diffusion. It is hoped that this study will provide a fresh perspective in designing next-generation lithium-ion battery particles.

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Section: Potentiostatic Charging Conditionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rethinking battery degradation in presence of surface effects: mechanical versus electrochemical peformance mediated by charging condition

Sengupta¹,

Chakraborty²

2021

Preprint

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“…As a rechargeable energy supply system, the battery operates with the cyclically dynamic process of lithium intercalation into and extraction from solid electrodes. Accompanying with the Li-ion cyclically diffuse in and out the electrodes, the inhomogeneous lithium distribution will lead to a cyclic field of stress known as diffusion induced stress (DIS) [4,5,6]. A mass of numerical studies are devoted to simulate the DIS for multifarious configurations of electrode.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the cyclic mechanical damage of Li-ion battery electrode and experimental validation

Zhu

Xie

Chen

et al. 2021

International Journal of Fatigue

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Evidences have accumulated that the cyclic diffusion-induced stress within lithiation-delithiation process will result in the cyclically evolutive mechanical damage of battery electrode, which adversely affects the mechanical integrity as well as the performance of the Li-ion battery. In this work, the mechanical degradation of electrode under electrochemical-mechanical condition is innovatively evaluated as a fatigue damage process, governed by the interaction between diffusion behaviour and stress generation, and accumulated fatigue damage affected stress-strain response. Structural configuration of a layered electrode plate is modeled in finite element software ABAQUS and a set of user subroutines are developed to implement the proposed fatigue evaluation approach for battery electrode. The constructed approach is proved to be able to simulate multifarious categories of fatigue damage accumulation trends of battery electrode. The strategy to correlate the electrochemistry represented damage with mechanical fatigue damage are proposed. Experimental performance tests are conducted to parameterize the fatigue damage model within the assessment approach for electrode material LiNi0.5Mn0.3Co0.2O2 (NMC532). After parameterization, further circulating chargingdischarging experiments and fatigue damage simulations with respect to different C-rate conditions are carried out to study the applicability of the proposed evaluation model as well as the assumption between electrochemical and mechanical deterioration. It is observed that the electrode surface adhering to electrolyte is more prone to fracture in the cycling operation. The present research work shows that it is available to apply the fatigue damage method to study the gradually mechanical failure of battery electrode under electrochemical-mechanical condition.

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“…Working as a cyclic energy system, the battery runs on the basis of Li-ion inserting into and extracting from electrode. The swell and shrink of electrode caused by this lithiation-delithiation behaviour will result in the diffusion-induced stress (DIS) [4,5,6], which has been investigated by a large number of researchers with adopting various methods. Christensen and Newman [7] have derived a mathematical model for studying the concentration and stress fields of particle structure under lithiation-delithiation condition.…”

Section: Introductionmentioning

confidence: 99%

On the study of cyclic plasticity behaviour of primary electrode particle for lithium-ion battery

Zhu

Chen

Luan

2021

European Journal of Mechanics - A/Solids

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Modeling diffusion–induced stress on two-phase lithiation in lithium-ion batteries

Cited by 26 publications

References 35 publications

Rethinking battery degradation in presence of surface effects: mechanical versus electrochemical peformance mediated by charging condition

Rethinking battery degradation in presence of surface effects: mechanical versus electrochemical peformance mediated by charging condition

Numerical analysis of the cyclic mechanical damage of Li-ion battery electrode and experimental validation

On the study of cyclic plasticity behaviour of primary electrode particle for lithium-ion battery

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