A Finite Strain Based Coupled Chemo-Mechanical Study of the Anode Materials in Lithium-ion Batteries

Mohanty, Shaswat; Kumbhar, Pramod; Swaminathan, Narasimhan; Annabattula, Ratna Kumar

doi:10.1166/jcsmd.2018.1169

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A few works highlight the effect of the mechanical stresses on the electrochemical response and underline the importance of including the stress terms in the chemical potential 33‐36 . There have been other works describing the detailed aspects of the numerical modelling of the active particles with the incorporation of stress‐diffusion effects 37‐41 …”

Section: Introductionmentioning

confidence: 99%

“…A few works highlight the effect of the mechanical stresses on the electrochemical response and underline the importance of including the stress terms in the chemical potential. [33][34][35][36] There have been other works describing the detailed aspects of the numerical modelling of the active particles with the incorporation of stress-diffusion effects. [37][38][39][40][41] The aforementioned studies focused on the various aspects concerning stress diffusion interactions at the individual particle level.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Mesoscale analysis of Li‐ion battery microstructure using sequential coupling of discrete element and finite element method

Kumbhar

Swaminathan

Annabattula

2022

Intl J of Energy Research

Self Cite

View full text Add to dashboard Cite

A mesoscale-continuum framework is presented for modelling the charging and discharging of a Li-ion battery electrode microstructure through a semiconcurrent finite element method (FEM)-discrete element method (DEM) framework. The framework accounts for (a) size changes due to stressdiffusion interactions within each active particle and (b) the inter-particle interactions resulting due to these size changes. The size alterations of individual active particles are captured through coupled chemo-mechanical equations using the FEM. The resulting size changes lead to the inter-particle interactions which are modelled using the DEM. A staggered approach composed of multiple cycles is implemented. Each cycle consists of sequential sub-steps of the FEM and DEM. This framework is employed to study the mono-and polysized assembly of the microstructures consisting of active particles. The packing fraction evolution agrees reasonably well with the theoretical and experimental predictions. From the simulations, it is observed that the polydispersity does not influence the final macroscopic packing fraction of the assembly upon charging or discharging. However, in assemblies with a lower packing fraction, the relative size changes among all the particles are almost the same, contrary to assemblies with a higher packing fraction, where the extent of the relative radii change is different across the particles. The framework can also handle the multiple cycles of charge and discharge, which can help studies concerning capacity fade and other associated phenomena in the future.

show abstract

Section: Introductionmentioning

confidence: 99%

“…A few works highlight the effect of the mechanical stresses on the electrochemical response and underline the importance of including the stress terms in the chemical potential. [33][34][35][36] There have been other works describing the detailed aspects of the numerical modelling of the active particles with the incorporation of stress-diffusion effects. [37][38][39][40][41] The aforementioned studies focused on the various aspects concerning stress diffusion interactions at the individual particle level.…”

Section: Introductionmentioning

confidence: 99%