化工新型材料

化工新型材料 ›› 2023, Vol. 51 ›› Issue (10) : 84-90. DOI: 10.19817/j.cnki.issn1006-3536.2023.10.030

综述与专论

单晶高镍三元正极材料的研究进展

作者信息 +

Research progress of single-crystal Ni-rich ternary cathode materials

Liu Junjie, Wang Bo, Chu Chenxiao, Qin Xianzhong, Cai Feipeng

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文章历史 +

Received		Published
2022-06-23		2023-10-20
Issue Date	Revised Date
2023-10-27	2022-06-23

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摘要

锂离子电池单晶型高镍三元正极材料因其稳定的晶体结构和优异的循环性能,已成为目前正极材料研究的热点。但其制备过程采用的过高烧结温度和过量锂源等方法,也会导致杂质相和锂残留的产生,引起比容量降低和倍率性能下降。对单晶高镍三元正极材料的结构特点做了介绍,总结了现有制备单晶高镍三元正极材料的手段,并对提升材料性能的改性工作做了介绍,探讨了结构变化对材料电化学性能的影响,以期为后续高性能单晶高镍三元正极材料的研究提供借鉴。

Abstract

Single-crystal Ni-rich ternary cathode materials for lithium-ion batteries have become a focus in cathode material research due to their stable crystal structure and excellent cycling performance.However,preparing conditions,such as high sintering temperature and excess lithium source,etc.,can lead to the generation of impurity phases and lithium residues,resulting in low specific capacity and poor rate capability.In this paper,the structural characteristics of single-crystal Ni-rich ternary cathode materials were introduced,the methods for preparing single-crystal Ni-rich ternary cathode materials were summarized,the modification work to improve the performance of the materials was discussed,and the effects of structural changes on the electrochemical properties were explored,so as to provide a reference for the subsequent research on high-performance single-crystal Ni-rich ternary cathode materials.

关键词

锂离子电池 / 高镍单晶正极 / 制备 / 改性

Key words

lithium-ion battery / single-crystal Ni-rich cathode / preparation / modification

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单晶高镍三元正极材料的研究进展[J]. 化工新型材料, 2023, 51(10): 84-90 DOI:10.19817/j.cnki.issn1006-3536.2023.10.030

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