Heterogeneous aging of large‐scale flexible lithium‐ion batteries based on micro‐heterostructures and simulation

• Published in: International journal of energy research Vol. 44; no. 14; pp. 12112 - 12125
• Main Authors: Hong, Yinghao, Zheng, Jieqing, Deng, Dingrong, Wu, Qihui, Shen, Wenfeng
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Inc 01.11.2020
• Subjects: Ageing; Aging; Attenuation; Batteries; battery cell; Capacity; Cathodes; Contact stresses; Crack propagation; Cracks; Diffusion rate; Discharge; Electric contacts; Electric vehicles; Electrode materials; Electrodes; electro‐chemo‐thermo‐mechanical coupling model; Field emission microscopy; Heavy metals; Heterogeneity; Heterostructures; Image reconstruction; Ion concentration; Lithium; Lithium manganese oxides; Lithium-ion batteries; LTO/LMO; Manganese; Manganese oxides; Mechanical properties; Metal foils; Microstructure; Morphology; Particle physics; Physics; pore structure; Scanning electron microscopy; Simulation; Stress; Stress distribution; Temperature distribution; Temperature fields

Summary To meet application demands of electric vehicles, cathode materials of batteries have to overcome the life limitation and performance attenuation caused by crack propagation on the surface of electrode particles. With the increase of size and power of batteries, the voltage gradient generate...