Surface Structures and Properties of High-Voltage LiCoO₂: Reviews and Prospects

Authors

Jianjun Fang, School of Advanced Materials, Peking University Shenzhen Graduate School Shenzhen, Guangdong province, 518055, China; Qiantu battery Technology Co. Ltd., Dongguan, Guangdong Province, 523808, China
Yuhao Du, School of Advanced Materials, Peking University Shenzhen Graduate School Shenzhen, Guangdong province, 518055, China
Zijian Li, School of Advanced Materials, Peking University Shenzhen Graduate School Shenzhen, Guangdong province, 518055, China
Wenguang Fan, School of Advanced Materials, Peking University Shenzhen Graduate School Shenzhen, Guangdong province, 518055, China
Hengyu Ren, School of Advanced Materials, Peking University Shenzhen Graduate School Shenzhen, Guangdong province, 518055, China
Haocong Yi, School of Advanced Materials, Peking University Shenzhen Graduate School Shenzhen, Guangdong province, 518055, China
Qinghe Zhao, School of Advanced Materials, Peking University Shenzhen Graduate School Shenzhen, Guangdong province, 518055, China
Feng Pan, School of Advanced Materials, Peking University Shenzhen Graduate School Shenzhen, Guangdong province, 518055, China

Document Type

Review

Corresponding Author(s)

Jianjun Fang(fanwg@pku.edu.cn);
Qinghe Zhao(zhaoqh@pku.edu.cn);
Feng Pan(panfeng@pkusz.edu.cn)

Abstract

Nowadays, the development of high-voltage LiCoO₂ (LCO) cathodes has attracted the widespread attention from both the academic and industry fields. Among the multiple concerns, researches on the surface issues provide the most effective performance optimization pathway for the synthesis of high-voltage LCO. In this work, the issues of high-voltage LCO have been systematically reviewed, including the phase transitions and crack’s formation, the oxygen redox related issues and side reactions, as well as the surface structure degradation. Then, we further clarify the surface modulations and the interplay between the surface modulation and electrolyte tuning. Finally, we propose our prospects for developing the more advanced LCO cathodes, including the low-cost and high-quality manufacturing, designing suitable LCO cathodes in some extreme conditions (such as, high-temperature, high-rate charging, low temperature, etc.), and achieving stabilized capacity release of about 220 mAh g^-1 of LCO, etc. We hope that this work can serve as a reference to promote the development and application of high-voltage LCO in future.

Graphical Abstract

Keywords

LiCoO2, Interface structures, Phase transition, Surface modulation, CEI

DOI

10.61558/2993-074X.3445

Online Date

2-21-2024

Recommended Citation

Jianjun Fang, Yuhao Du, Zijian Li, Wenguang Fan, Hengyu Ren, Haocong Yi, Qinghe Zhao, Feng Pan. Surface Structures and Properties of High-Voltage LiCoO2: Reviews and Prospects[J]. Journal of Electrochemistry, doi: 10.61558/2993-074X.3445.