Energy Storage Science and Technology ›› 2020, Vol. 9 ›› Issue (5): 1327-1339.doi: 10.19799/j.cnki.2095-4239.2020.0123

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Layered oxide cathode for sodium ion batteries: Interlayer glide, phase transition and performance

Huanqing LIU(), Xu GAO, Jun CHEN, Shouyi YIN, Kangyu ZOU, Laiqiang XU, Guoqiang ZOU, Hongshuai HOU, Xiaobo JI()   

  1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, Hunan, China
  • Received:2020-03-27 Revised:2020-05-16 Online:2020-09-05 Published:2020-09-08
  • Contact: Xiaobo JI E-mail:hqliuooo@163.com;xji@csu.edu.cn

Abstract:

Due to the abundance of sodium resources, sodium-ion batteries (SIBs), as rechargeable batteries, have received increasing attention, especially for large-scale energy storage systems. However, the development of SIBs is hindered by the lack of suitable host materials to reversibly insert/extract Na ions. Layered transition metal oxides (NaxMO2, M = Fe, Mn, Ni, Co, Cr and their combinations) are promising cathode materials for SIBs due to their high theoretical capacity and simple structure. Interlayer glide and phase transitions are more prone to occur in sodium transition metal layered oxides than in their lithium counterparts. In this review, recent progress on the structural evolution and electrochemical performance of NaxMO2 materials are summarized. The dependence of the battery performance (the cycle performance, rate performance, and energy efficiency) on the structural evolution are discussed. In addition, this review presents several strategies to alleviate this problem and points to next generation electrode materials for SIBs.

Key words: cathode material, phase transition, interlayer glide, sodium ion battery, layered oxide

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