Stress analysis of an induced elastoplastic bending of Lithium ion battery electrodes

Li-ion Batteries have been extensively used in many homeand industrial applications. In these batteries the chargingand discharging are carried out by lithiation anddelithiation. Li-ions insertion causes a volumetric changeand so stresses and strains are induced. In this research abeam electrode in charging and discharging is considered.During the lithiation the ion concentration is given as afunction of time. Then the strains and stress are determined.The important induced stresses and strains cause plasticdeformation. So, the kinematic hardening model of Pragerwas supposed. The numerical method of return mapping isused to obtain plastic strain and stresses in the electrode.

کلیدواژه ها:

Lithium ion battery ، Lithiation ، Stress induced ، Delithiation ، Plastic deformatio