Inorganic Chemicals Industry ›› 2023, Vol. 55 ›› Issue (10): 1-12.doi: 10.19964/j.issn.1006-4990.2023-0296

• Reviews and Special Topics •     Next Articles

Research progress of layered transition metal oxides cathode materials for sodium-ion batteries

PENG Chenxi(), LIU Jun()   

  1. Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials,School of Materials Science andEngineering,South China University of Technology,Guangzhou 510641,China
  • Received:2023-05-30 Online:2023-10-10 Published:2023-10-16
  • Contact: LIU Jun E-mail:171805106@qq.com;msjliu@scut.edu.cn

Abstract:

Layered transition metal oxides are considered as one of the most promising cathode materials for sodium-ion batteries(SIBs) due to their high theoretical capacity and ease of synthesis,which have attracted widespread attention.The purpose of this article is to review the research progress on layered transition metal oxides as cathode materials for SIBs.Firstly,a brief overview of the structural characteristics and existing issues of layered transition metal oxide cathode materials was provided.The Na+ coordination configurations and diffusion paths in terms of P2 and O3-type layered transition metal oxide cathode materials were also introduced.In addition,considering the issues of irreversible phase transition during charge/discharge process,high air sensitivity,and insufficient electrochemical performance,the recent research results of P2 and O3-type layered transition metal oxides were summarized based on three types of modification methods:component regulation,structural design,and surface coating.Finally,the future industrial development and potential research directions of layered transition metal oxide cathode materials for SIBs were prospected.

Key words: sodium-ion batteries, cathode materials, layered transition metal oxides, O3 phase, P2 phase

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