Inorganic Chemicals Industry ›› 2021, Vol. 53 ›› Issue (8): 1-7.doi: 10.19964/j.issn.1006-4990.2020-0503

• Reviews and Special Topics •     Next Articles

Research progress of coating modification of high nickel ternary materials for lithium-ion batteries

Zhao Duan(),Zhou Geng,Hou Shunli,Lan Ziwei,Zhang Jianru,Li Jian,Wang Jiatai()   

  1. College of Physics and Electronic Information Engineering,Qinghai Normal University,Xining 810000,China
  • Received:2020-09-07 Online:2021-08-10 Published:2021-08-11
  • Contact: Wang Jiatai E-mail:momsun@foxmail.com;manvict@foxmail.com

Abstract:

High nickel ternary materials for lithium-ion batteries have become the preferred cathode materials for electric ve-hicles and portable electronic devices due to the advantages of long cycle life,environmental protection and low cost.However,increase of nickel content tends to make surface structure of materials unstable and increase side reaction of the interface,which leads to decrease of the cycle performance of materials.In this paper,the modification research of high nickel ternary materials from two aspects of single-layer and double-layer coating was reviewed and the influence of different coating materials on electrochemical performance was introduced.Double-layer coating could better improve the electrochemical performance of high nickel ternary materials,but the removal of HF still needs to be studied.

Key words: lithium-ion batteries, high nickel ternary materials, coating modification

CLC Number: