| Autor: |
Zhenjie Zhang, Yixin Li, Chu Zhang, Yurui Gao, Xuefeng Wang, Zhaoxiang Wang, Liquan Chen |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Next Materials, Vol 3, Iss , Pp 100165- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2949-8228 |
| DOI: |
10.1016/j.nxmate.2024.100165 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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