锂离子电池镍钴铝酸锂正极材料研究进展

方锐, 李子坤, 周豪杰, 李向军, 任建国

化工新型材料 ›› 2021, Vol. 49 ›› Issue (8) : 215 -219.

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化工新型材料 ›› 2021, Vol. 49 ›› Issue (8) : 215-219. DOI: 10.19817/j.cnki.issn 1006-3536.2021.08.046
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锂离子电池镍钴铝酸锂正极材料研究进展

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Research progress on LiNixCoyAl1-x-yO2 cathode material for Li-ion battery

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摘要

镍钴铝酸锂正极材料因高比容量和较低的成本而被认为是最具潜力的下一代高能量密度锂离子电池正极材料。但其结构和界面不稳定性导致较差的循环性能、倍率性能及热稳定性。总结并讨论了镍钴铝酸锂正极材料在充放电过程中的衰减机理及相应的改性研究,并对镍钴铝酸锂正极材料进一步的研究进行了展望。

Abstract

LiNixCoyAl1-x-yO2 cathode materials have been considered as the most promising material for the next generation high-energy density Li-ion batteries due to their high specific capacity and low cost.However,their structure and interface instability lead to poor cycle performance,rate capability and thermal stability.The researches on attenuating mechanisms during cycling and their corresponding modification were summarized,and prospected further researches on the LiNixCoyAl1-x-yO2 cathode materials.

关键词

镍钴铝酸锂 / 正极材料 / 体相掺杂 / 表面包覆 / 锂离子电池

Key words

LiNixCoyAl1-x-yO2 / cathode material / bulk phase doping / surface coating / Li-ion battery

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方锐, 李子坤, 周豪杰, 李向军, 任建国. 锂离子电池镍钴铝酸锂正极材料研究进展[J]. 化工新型材料, 2021, 49(8): 215-219 DOI:10.19817/j.cnki.issn 1006-3536.2021.08.046

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