基于应力场的锂离子电池正极多尺度失效研究

陈莹, 栾伟玲, 陈浩峰, 朱轩辰

Multi-scale Failure Behavior of Cathode in Lithium-ion Batteries Based on Stress Field

CHEN Ying, LUAN Weiling, CHEN Haofeng, ZHU Xuanchen

图3 直径为3 μm颗粒在电流密度0.37 A/m2下裂纹萌生扩展过程[17]

Fig. 3 Crack initiation and propagation of active particle of diameter of 3 μm under the current density of 0.37 A/m2[17] (a) Lithiation process; (b) Delithiation process. The variable STATUSXFEM presents the status of element, and it varies 0 (non-damage status) or 1 (completely cracked)