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

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

doi:10.19817/j.cnki.issn 1006-3536.2021.07.007

New Chemical Materials >

2021 , Vol. 49 >Issue 7: 28 - 32

DOI: https://doi.org/10.19817/j.cnki.issn 1006-3536.2021.07.007

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

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

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National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials,Key Laboratory of Green-chemical Materials in University of Yunnan Province,Yunnan Minzu University,Kunming 650500

Received date: 2020-04-07

Revised date: 2021-04-14

Online published: 2021-08-19

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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.

Key words： LiMn₂O₄; cathode material; lithium ion battery; carbon family element; doping; coating

Cite this article

Liu Qing , Tao Yang , Xiang Mingwu , Guo Junming , Liu Xiaofang , Bai Hongli . Research progress on spinel LiMn₂O₄ cathode material modified by carbon family element[J]. New Chemical Materials, 2021 , 49(7) : 28 -32 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.07.007

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