化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (10) : 57-62. DOI: 10.19817/j.cnki.issn1006-3536.2022.10.012

综述与专论

高镍三元镍钴铝酸锂正极材料研究进展

作者信息 +

Research progress on LiNi_xCo_yAl_1-x-yO₂ cathode material with high Ni

Li Yuanyuan, Xi Ruheng, Lan Ziwei, Zhang Jianru, Zhang Caihong

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文章历史 +

Received		Published
2021-07-01		2022-10-20
Issue Date	Revised Date
2022-11-01	2021-07-01

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摘要

高镍三元镍钴铝LiNi_xCo_yAl_1-x-yO₂(NCA)三元正极材料由于具有循环寿命长、能量密度高、环境污染少等优点,被认为是最具潜力的锂离子动力电池正极材料之一。然而,当镍含量较高(Ni≥80%)时,三元NCA正极材料在充放电过程中的阳离子混排和不可逆相变等问题会加剧,表现出结构不稳定和容量衰减。此外,电动汽车等行业对于三元锂离子电池的高容量也有更高的追求。鉴于此,综述了近年来高镍三元正极材料NCA的最新研究进展,并对未来趋势做了展望。

Abstract

High-nickel ternary nickel cobalt lithium aluminate(LiNi_xCo_yAl_1-x-yO₂,NCA) ternary cathode material with high Ni has been considered as one of the most promising cathode materials for Li-ion power batteries due to its advantages such as long cycle life,high energy density and less environmental pollution.However,when the Ni content is higher (Ni≥80%),the problems of cation mixing and irreversible phase transformation in ternary NCA cathode materials are aggravated,and the structure is unstable and the capacity is decreased.In addition,electric vehicles and other industries for the high capacity of ternary Li-ion batteries also have higher pursuit.In view of this,the recent research progress of high nickel NCA ternary cathode materials was reviewed,and prospected the future trend.

关键词

锂离子电池 / 高镍三元镍钴铝 / 高镍 / 掺杂 / 包覆

Key words

lithium-ion battery / NCA with high Ni / high nickel / doping / coating

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高镍三元镍钴铝酸锂正极材料研究进展[J]. 化工新型材料, 2022, 50(10): 57-62 DOI:10.19817/j.cnki.issn1006-3536.2022.10.012

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