A comprehensive diffusion-induced stress coupled multiscale modeling and analysis in hard-carbon electrodes of Li-ion batteries
P. Pavan Kumar, Asutosh Agrawal, Debasis Nayak, Koushik Biswas, Sudipto Ghosh, Tarun Kumar Kundu
Abstract
diffusivity and elastic modulus with SOC and tracks stress relaxation and volume expansion in the particles during lithiation. An optimized particle size has been recommended for hard carbon, considering both stresses for different C-rates. Our study provides a more realistic multiscale modeling framework for optimizing the DIS and can act as a guiding method towards achieving an optimum particle size so that capacity fading due to cracking can be avoided.
Topics & Concepts
IonElectrodeCarbon fibersDiffusionMaterials scienceStress (linguistics)Chemical physicsNanotechnologyEngineering physicsChemistryThermodynamicsComposite materialPhysicsPhysical chemistryComposite numberOrganic chemistryLinguisticsPhilosophyAdvancements in Battery MaterialsAdvanced Battery Technologies ResearchSupercapacitor Materials and Fabrication