An In Situ Formed Surface Coating Layer Enabling LiCoO2 with Stable 4.6 V High‐Voltage Cycle Performances

• Published in: Advanced energy materials Vol. 10; no. 28
• Main Authors: Wang, Yi, Zhang, Qinghua, Xue, Zhi‐Chen, Yang, Lufeng, Wang, Junyang, Meng, Fanqi, Li, Qinghao, Pan, Hongyi, Zhang, Jie‐Nan, Jiang, Zheng, Yang, Wanli, Yu, Xiqian, Gu, Lin, Li, Hong
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.07.2020
• Subjects: Annealing; cathodes; Conduction; Conductors; Flux density; Interface stability; Lithium; lithium cobalt oxide; Lithium compounds; Lithium-ion batteries; Oxidation; Reaction kinetics; Room temperature; solid electrolytes; Spinel; surface coating; Surface layers; Thermal stability

The development of high‐voltage LiCoO2 is essential for achieving lithium‐ion batteries with high volumetric energy density, however, it faces a great deal of challenges owing to the materials, structure and interfacial instability issues. In this work, a strategy is developed, through heat annealin...