Energy Storage Science and Technology ›› 2021, Vol. 10 ›› Issue (2): 408-424.doi: 10.19799/j.cnki.2095-4239.2020.0402

• Energy Storage Materials and Devices • Previous Articles     Next Articles

Challenges and solutions of lithium-rich manganese-based layered oxide cathode materials

Zuhao ZHANG(), Xiaokai DING, Dong LUO(), Jiaxiang CUI, Huixian XIE, Chenyu LIU, Zhan LIN()   

  1. School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, Guangdong, China
  • Received:2020-12-16 Revised:2020-01-04 Online:2021-03-05 Published:2021-03-05
  • Contact: Dong LUO,Zhan LIN E-mail:zuhao1997@126.com;luodong@gdut.edu.cn;zhanlin@gdut.edu.cn

Abstract:

The rapid development of electric vehicle (EV) and hybrid electric vehicle (HEV) has put forward higher requirements on the energy density and cycle life of lithium-ion batteries. Cathode material is one of the most critical parts in determining the performance of lithium-ion batteries. Lithium-rich manganese-based layered oxides (LMLOs) are considered to be the most promising cathode materials for next-generation power batteries due to their high specific capacity (>250 mA·h/g), high work voltage, low cost and high safety. However, low initial coulombic efficiency, severe voltage fading, and poor cycle and rate performance prevent their practical application. This review summarizes the causes of the above-mentioned problems, including irreversible oxygen release, irreversible transformation from layered structure to spinel phase, and migration and valence change of transition metal ions. What’s more, some typical solutions reported by domestic and overseas researchers in recent years are also summarized from the following four aspects: surface coating, surface/bulk doping, crystal-facet control, and surface integrated structure, respectively.

Key words: lithium-ion batteries, lithium-rich manganese-based layered oxide, structural evolution, voltage fading, cathode materials

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