Document Type


Corresponding Author(s)

Jianjun Fang(;
Qinghe Zhao(;
Feng Pan(


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


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

Online Date


SI-2314005.pdf (346 kB)



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