Research on Improving the Electrochemical Performance of LiMn2O4 via Cr-Doping

被引：32

作者：

Jiang, Jianbing ^{[1
]}

Li, Wei ^{[1
]}

Deng, Haojie ^{[1
]}

Gong, Guo ^{[3
]}

Li, Na ^{[2
]}

机构：

[1] Hunan Univ Technol, Coll Packaging & Mat Engn, Zhuzhou 412007, Peoples R China

[2] Hunan Univ Technol, Coll Met & Mat Engn, Zhuzhou 412008, Peoples R China

[3] Hunan Univ Technol, Coll Life Sci & Chem, Zhuzhou 412007, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2019年 / 19卷 / 01期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Lithium Ion Battery; Cathode Material; Cr Doping; Spherical LiMn2O4; LITHIUM-ION BATTERIES; CATHODE MATERIALS; ELEVATED-TEMPERATURE; BIOLOGICAL-MATERIALS; SPINEL; CONVERSION; COMPOSITE; CHEMISTRY; PROGRESS; METAL;

D O I：

10.1166/jnn.2019.16386

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cr was doped into LiMn2O4 compound in this study through the traditional solid-state reaction route. The pattern of X-ray diffraction (XRD) revealed that the structure of LiMn2O4 had not changed, and scanning electron microscopy (SEM) exhibited that all samples possessed similar morphology. It was seen that all the samples presented more than 100 mAh/g capacity under different discharge current rates. Because partial Mn3+ was replaced by Cr3+, the LiMn2-xCrxO4 revealed excellent cycling stability. Electrochemical result demonstrated that the optimal content of Cr-doping was 0.02, which had an initial discharged capacity of 133.9 mAh/g at 1C rate. These results suggest a new method for enhancing cycle stability of LiMn2O4 materials.

引用

页码：125 / 129

页数：5

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