Correlation between oxygen redox and structure of oxide cathode materials

Zhenjie Zhang; Yixin Li; Chu Zhang; Yurui Gao; Xuefeng Wang; Zhaoxiang Wang; Liquan Chen

Next Materials (Apr 2024)

Correlation between oxygen redox and structure of oxide cathode materials

Zhenjie Zhang,
Yixin Li,
Chu Zhang,
Yurui Gao,
Xuefeng Wang,
Zhaoxiang Wang,
Liquan Chen

Affiliations

Zhenjie Zhang: Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; College of Material Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Yixin Li: Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
Chu Zhang: Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; College of Material Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Yurui Gao: College of Material Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China; National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing 100190, China; Corresponding authors at: College of Material Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
Xuefeng Wang: College of Material Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China; Laboratory for Advanced Materials and Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Corresponding authors at: College of Material Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
Zhaoxiang Wang: Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; College of Material Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding authors at: College of Material Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
Liquan Chen: Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Journal volume & issue: Vol. 3
p. 100165

Abstract

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Redox of the transition metals is definitely the most important way of charge compensation in the conventional electrode materials. Utilization of oxygen redox (or more popularly the anionic redox) is another effective strategy to capture extra capacities in the oxide cathode materials (OCMs). Oxygen redox has been realized in oxides with diversified structures in addition to the conventional Li-rich Mn-rich layered oxide (LMR) cathode materials. However, a unified theory is still lacking about the oxygen redox mechanism in these materials. Moreover, the oxygen redox is often accompanied with undesired structural and performance degradations, which turn to hinder the application of the conventional materials at high potentials and the development of novel oxygen-redox based cathode materials. Considering that oxygen constructs the framework of OCMs and its electronic structure has a strong impact on the electrochemical performance of OCMs, it is necessary to summarize the correlation between oxygen redox and the structure of the oxides. This review recalls the recent advances in oxygen redox in different oxide materials, its impacts on the structural transformation, and strategies to suppress or promote the oxygen redox. On the basis of these, a perspective on enhancing the structural stability and performance of the oxygen-redox OCMs is proposed.

Published in Next Materials

ISSN: 2949-8228 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology
Website: https://www.sciencedirect.com/journal/next-materials

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