锂离子电池高镍三元材料的包覆改性研究进展

doi:10.19964/j.issn.1006-4990.2020-0503

摘要/Abstract

摘要：

锂离子电池高镍三元材料具有循环寿命长、绿色环保、成本低等优点,已成为电动汽车、便携式电子设备等领域的首选正极材料。但是,镍含量的增加容易使材料表面结构不稳定、界面副反应增加,导致材料的循环性能降低。主要从单层包覆和双层包覆两个方面综述了高镍三元材料的改性研究,介绍了不同包覆材料对其电化学性能的影响。双层包覆能更好地改进高镍三元材料的电化学性能,但是在清除氟化氢方面仍需进行研究。

关键词: 锂离子电池, 高镍三元材料, 包覆改性

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

中图分类号:

TQ131.11

赵段,周庚,侯顺丽,蓝兹炜,张建茹,李健,王甲泰. 锂离子电池高镍三元材料的包覆改性研究进展[J]. 无机盐工业, 2021, 53(8): 1-7.

Zhao Duan,Zhou Geng,Hou Shunli,Lan Ziwei,Zhang Jianru,Li Jian,Wang Jiatai. Research progress of coating modification of high nickel ternary materials for lithium-ion batteries[J]. Inorganic Chemicals Industry, 2021, 53(8): 1-7.

图/表 2

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