化工新型材料

化工新型材料 ›› 2021, Vol. 49 ›› Issue (7) : 28-32. DOI: 10.19817/j.cnki.issn 1006-3536.2021.07.007

综述与专论

碳族元素改性尖晶石型锰酸锂正极材料的研究进展

作者信息 +

Research progress on spinel LiMn₂O₄ cathode material modified by carbon family element

Liu Qing, Tao Yang, Xiang Mingwu, Guo Junming, Liu Xiaofang, Bai Hongli

Author information +

文章历史 +

Received
2020-04-07
Issue Date	Revised Date
2021-08-19	2020-04-07

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摘要

碳族元素包括C、Si、Ge、Sn和Pb这5种元素,位于周期表第四主族,其中C和Si是非金属元素且分别为良好的导体和半导体材料,Ge、Sn、Pb是金属元素,最高氧化数为+4,在周期表中从上往下,表现出惰性电子对效应,低氧化态趋于稳定,其单质、离子或氧化物等可对尖晶石型锰酸锂(LiMn₂O₄)进行掺杂或表面包覆改性。Si和Ge元素主要取代LiMn₂O₄材料中的部分Mn⁴⁺离子,据其不同氧化数,Sn既可以取代Mn³⁺离子,也可以取代Mn⁴⁺离子,Pb元素则取代Mn³⁺离子。综述了历年来碳族元素掺杂和包覆改性尖晶石型LiMn₂O₄正极材料的研究进展,展望了碳族元素改性尖晶石型LiMn₂O₄的发展前景。

Abstract

Carbon family elements include 5 elements of C,Si,Ge,Sn and Pb,which are located in the fourth main family of the periodic table.Among them,C and Si are non-metallic elements with good conductor and semiconductor materials,respectively,Ge,Sn and Pb are metal elements,and the maximum oxidation number is +4.From the top down in the periodic table,there's an inert electron pair effect,and the low oxidation state tends to be stable,its elements,ions or oxides can be used to modify spinel LiMn₂O₄ by doping or surface coating.Si and Ge elements mainly substitute partial Mn⁴⁺ ions.According to Sn different oxidation numbers,it can substitute both Mn³⁺ and Mn⁴⁺ ions,while Pb element can substitute Mn³⁺ ions.The progress of carbon group element doping and coating modification of spinel LiMn₂O₄ cathode material was reviewed.The development prospect of carbon group element modification of spinel LiMn₂O₄ was prospected.

关键词

锰酸锂 / 正极材料 / 锂离子电池 / 碳族元素 / 掺杂 / 包覆

Key words

LiMn₂O₄ / cathode material / lithium ion battery / carbon family element / doping / coating

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碳族元素改性尖晶石型锰酸锂正极材料的研究进展[J]. 化工新型材料, 2021, 49(7): 28-32 DOI:10.19817/j.cnki.issn 1006-3536.2021.07.007

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