@article{Zuo2025, 
author = {Qiang Zuo and Wen Liu and Ganchao Chen and Ke Ren and Yiguang Wang},
title = {The synthetic mechanism of LiCoO2 from CoO and Li2CO3 under electric field},
year = {2025},
journal = {Journal of Advanced Ceramics},
volume = {14},
number = {7},
pages = {9221105},
keywords = {LiCoO2, flash synthesis (FSyn), reaction pathway, cathode materials, phase diagram},
url = {https://www.sciopen.com/article/10.26599/JAC.2025.9221105},
doi = {10.26599/JAC.2025.9221105},
abstract = {Flash synthesis (FSyn) represents an innovative and energy-efficient approach for ceramic preparation. However, the limited understanding of the phase evolution mechanisms makes it challenging to optimize the synthesis parameters, hindering application development. Here, the FSyn of LiCoO2 cathodes using CoO as the cobalt source is investigated, providing important insights into the mechanisms of phase evolution and the role of environmental factors. In situ thermal monitoring and phase analysis revealed that the thermodynamic regulation of sample temperature was crucial for the formation of intermediates, such as LixCo1−xO. Concurrently, the exchange of oxygen with the surrounding environment controls the oxidation reaction processes and impacts the synthesis rate. In addition, the oxygen vacancies enhance the reaction kinetics by accelerating mass transfer. On the basis of these findings, three effective strategies have been developed to produce pure LiCoO2: (1) reducing the current density to lower the sample temperature and limit intermediate formation, (2) increasing the oxygen partial pressure to accelerate CoO oxidation and facilitate intermediate transformation, and (3) extending the holding time to ensure reaction completion. This work not only clarifies the FSyn mechanism of LiCoO2 but also offers a practical reference for optimizing the synthesis of other advanced ceramics.}
}