Energy Storage Science and Technology ›› 2021, Vol. 10 ›› Issue (1): 27-39.doi: 10.19799/j.cnki.2095-4239.2020.0306

• Energy Storage Materials and Devices • Previous Articles     Next Articles

Research progress of mono/binary composite cathode materials based on lithium-ion battery cathode materials

Ziwei LAN(), Jianru ZHANG, Yuanyuan LI, Ruheng XI, Duan ZHAO, Caihong ZHANG()   

  1. College of Physics and Electronic Information Engineering, Qinghai Normal University, Xining 810008, Qinghai, China
  • Received:2020-09-03 Revised:2020-09-13 Online:2021-01-05 Published:2021-01-08
  • Contact: Caihong ZHANG E-mail:momlanzw@foxmail.com;qhnu2020@163.com

Abstract:

Lithium-ion batteries composed of single cathode materials, such as LiCoO2, LiFePO4, and LiMO2 (M=NixCoyMnz/Alz, x+y+z=1), are widely used in aerospace aviation, electric vehicles, and electronic equipment due to their high specific capacity, large energy density, and long cycle life. However, these single cathode materials have an unstable structure, high irreversible capacity loss, poor cycle stability, low safety, and low conductivity, which restricts their application in large-scale power equipment. In this regard, we conducted a review of the literature on the application of single cathode materials in various fields and described their primary defects. It was found that a mono/binary composite cathode prepared by combining a single cathode material with other materials (cathode or non-cathode) can effectively solve the aforementioned problems, thereby improving the electrochemical performance and cycle stability of lithium-ion batteries. More specifically, this article presents a review on the research progress of 1+0 type and 1+0+0 type mono composite cathode materials, and 1+1 type and 1+1+0 type binary composite cathode materials based on lithium-ion battery cathode materials. In this series, 1 represents a lithium-ion cathode material and 0 represents a non-lithium-ion cathode material. Moreover, we analyzed the electrochemical performance of the four types of composite cathode materials with 14 different structural combinations. Finally, the main problems of composite cathode materials are explained and suggested development directions are proposed.

Key words: lithium-ion batteries, cathode material, composite cathode material

CLC Number: