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

Lithium-ion batteries are widely used as energy storage and dynamic power, while the capacity life of battery is one of the key factors affecting its further application. The electrochemical-mechanical multi-field coupling effect of the lithium-ion batteries during the cyclic charging and discharging process cause the damage accumulation for the electrode materials, thereby deteriorates the mechanical stability of the electrode materials, leading to multi-scale damage to the electrode materials, ultimately declining the battery life. In this study, the multi-scale failure behavior of LiNi x Co y Mn z O 2 (NCM) cathode materials were summarized through our previous research, and the