Simulation of diffusion-induced stress using reconstructed electrodes particle structures generated by micro/nano-CT

Lim, Cheolwoong; Yan, Bo; Yin, Leilei; Zhu, Likun

doi:10.1016/j.electacta.2012.04.120

Cited by 104 publications

(84 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the cycled anode electrode, the X-ray source was set at 25 kV and 5 W and each projection exposure time was 25 s. Detailed information about sample preparation can be found in our previous publication [23].…”

Section: Sample Preparationmentioning

confidence: 99%

“…For instance, Weidemann et al [20] developed a computational model that resolves the complex 3D microstructure of LIB cathodes and showed the local variations of lithium ion concentration and electrostatic potential in realistic electrodes. In our previous studies, the 3D numerical simulation also revealed the non-uniform spatial distributions of the potential, concentration, intercalation reaction rate, heat generation rate, and stress development [21][22][23]. The realistic microstructure of LIB electrodes play a key role to study morphological effects on lithium ion transport, electrochemical kinetics, material degradation, and cell performance.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Geometric Characteristics of Three Dimensional Reconstructed Anode Electrodes of Lithium Ion Batteries

et al. 2014

Self Cite

View full text Add to dashboard Cite

Abstract:The realistic three dimensional (3D) microstructure of lithium ion battery (LIB) electrode plays a key role in studying the effects of inhomogeneous microstructures on the performance of LIBs. However, the complexity of realistic microstructures imposes a significant computational cost on numerical simulation of large size samples. In this work, we used tomographic data obtained for a commercial LIB graphite electrode to evaluate the geometric characteristics of the reconstructed electrode microstructure. Based on the analysis of geometric properties, such as porosity, specific surface area, tortuosity, and pore size distribution, a representative volume element (RVE) that retains the geometric characteristics of the electrode material was obtained for further numerical studies. In this work, X-ray micro-computed tomography (CT) with 0.56 μm resolution was employed to capture the inhomogeneous porous microstructures of LIB anode electrodes. The Sigmoid transform function was employed to convert the initial raw tomographic images to binary images. Moreover, geometric characteristics of an anode electrode after 2400 cycles at the charge/discharge rate of 1 C were compared with those of a new anode electrode to investigate morphological change of the electrode. In general, the cycled electrode shows larger porosity, smaller tortuosity, and similar specific surface area compared to the new electrode. OPEN ACCESSEnergies 2014, 7 2559

show abstract

Section: Sample Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Geometric Characteristics of Three Dimensional Reconstructed Anode Electrodes of Lithium Ion Batteries

et al. 2014

Self Cite

View full text Add to dashboard Cite

show abstract

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] Chemical expansions of varying degrees have been observed and quantified in some of the existing electrode materials (graphite) and in prospective electrode materials like Sn, Al and Si. 17 The intercalation and de-intercalation of Li ions into and out of the electrode causes local chemical strains in the latter.…”

mentioning

confidence: 99%

“…11 develop a set of nondimensional parameters related to material properties and geometry to study the overall behavior of the system, including stress generaz E-mail: n.swaminathan@iitm.ac.in tion. A noteworthy shortcoming of the afore mentioned works [1][2][3][4][5][6][7][8][9][10][11] is that, changes in the material properties of the electrode material as a result of Li intercalation were neglected. Deshpande et al 12 studied the effects of change in Young's modulus of the electrode material on the induced stresses, assuming that diffusion was independent of the elasticity.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Elasticity and Size Effects on the Electrochemical Response of a Graphite, Li-Ion Battery Electrode Particle

Swaminathan

Balakrishnan

George

2015

J. Electrochem. Soc.

View full text Add to dashboard Cite

The interactions between electrochemical response, elasticity and particle size of a cylindrical, Li-ion battery, graphite electrode particle is studied. First, a potentiostatic study is conducted to demonstrate the role of higher-order stress terms of the chemical potential on the distributions of flux, stresses and concentrations. Then, two cyclic voltammetry experiments are simulated to study the effects of elasticity on the voltammograms. In the first, the electrode is discharged and then charged, while the second, involves the opposite. Effects of elasticity on the anodic (discharging) portion of the voltammograms are more pronounced in the first experiment when compared to the second. The effects of the elasticity also vary with particle size in different ways for the two experiments. In the first, the effects of stresses on the anodic current increases with particle size and then reaches a plateau at around 30 μm. In the second, a maximum effect of elasticity is seen for a particle size of 5 μm. Our study shows that, stresses induced due to diffusion of Li atoms not only affect the mechanical integrity of the electrode particle, but also change the way the particle responds to an applied external potential, thereby affecting its electrochemical response. Interactions of chemistry and mechanics in Li ion battery (LIB) electrodes has gained a lot of interest recently.1-16 Chemical expansions of varying degrees have been observed and quantified in some of the existing electrode materials (graphite) and in prospective electrode materials like Sn, Al and Si.17 The intercalation and de-intercalation of Li ions into and out of the electrode causes local chemical strains in the latter. During the functioning of the LIB, gradients in Li concentration that arise lead to non-uniform strains throughout the electrode particle. When these chemically induced strains are not accommodated by appropriate deformation of the solid, stresses are induced which can result in local failure and degradation in the performance of the electrode and hence the battery. Local changes in Li concentration also alter the mechanical properties of the electrodes. For a recent, detailed review on the effects of stress-diffusion interactions in Li-ion battery materials and the various experimental techniques involved in their quantification please see Ref. 18. The effects of Li diffusion induced stresses (DIS) are well understood and modeled through the framework of thermoelasticity. The changes in concentration are treated in a manner analogous to changes in temperature, and hence chemical strains are introduced into the constitutive equations of elasticity in the form of eigen strains. The elastic equilibrium equations are then solved in order to predict the stresses, displacement and strains. Stresses also affect the thermodynamics of the electrodes. For example, stresses alter the electrochemical potential of Si by 50mV or more.19 Another associated effect is stress induced diffusion (SID), where the elastic stresses developed in the elec...

show abstract

Progress in Simulating The Effect of Stress on The Performance of Lithium/Sodium‐Based Batteries

Wang,

Guo

et al. 2023

Advcd Theory and Sims

View full text Add to dashboard Cite

Lithium −1sodium‐based batteries have attracted widespread attention because of their high specific capacity and excellent energy density, and have become one of the hottest research directions in energy storage devices. However, the stress accumulated during the continuous electrochemical cycle will cause the inevitable electrode failure, which inhibits the further improvement of battery performance. In order to eliminate/relieve the internal stress problem, a variety of battery material structures have been designed. In the design of battery material structure, the simulation technology is used to conduct battery modeling to predict the experimental results, which effectively reduces the range of parameters. For this reason, this paper first introduces the parameters that need to be considered by establishing stress model. Then, the utilization of simulation technology in the structural design of diverse battery materials is examined in this study. Finally, the future application of simulation technology in the field of energy storage is prospected. This is aimed to encourage the widespread utilization of simulation technology in the energy storage battery industry, with the goal of reducing design‐related energy consumption, enhancing experimental design feasibility, and minimizing experimentation costs.

show abstract

Simulation of diffusion-induced stress using reconstructed electrodes particle structures generated by micro/nano-CT

Cited by 104 publications

References 35 publications

Geometric Characteristics of Three Dimensional Reconstructed Anode Electrodes of Lithium Ion Batteries

Geometric Characteristics of Three Dimensional Reconstructed Anode Electrodes of Lithium Ion Batteries

Elasticity and Size Effects on the Electrochemical Response of a Graphite, Li-Ion Battery Electrode Particle

Progress in Simulating The Effect of Stress on The Performance of Lithium/Sodium‐Based Batteries

Contact Info

Product

Resources

About