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

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成果类型:
期刊论文
作者:
Jiang, Jianbing;Li, Wei;Deng, Haojie;Gong, Guo;Li, Na*
通讯作者:
Li, Na
作者机构:
[Gong, Guo] Hunan Univ Technol, Coll Life Sci & Chem, Zhuzhou 412007, Peoples R China.
[Li, Wei; Deng, Haojie; Jiang, Jianbing] Hunan Univ Technol, Coll Packaging & Mat Engn, Zhuzhou 412007, Peoples R China.
[Li, Na] Hunan Univ Technol, Coll Met & Mat Engn, Zhuzhou 412008, Peoples R China.
通讯机构:
[Li, Na] Hunan Univ Technol, Coll Met & Mat Engn, Zhuzhou 412008, Peoples R China.
语种:
英文
关键词:
Lithium Ion Battery;Cathode Material;Cr Doping;Spherical LiMn2O4
期刊:
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
ISSN:
1533-4880
年:
2019
卷:
19
期:
1
页码:
125-129
文献类别:
WOS:Article
所属学科:
WOS学科类别:Chemistry, Multidisciplinary;Materials Science, Multidisciplinary;Nanoscience & Nanotechnology;Physics, Applied;Physics, Condensed Matter
入藏号:
基金类别:
National Natural Science Foundation of China [51604106]; Foundation of Hunan Province Department of Education [16C0458]; China Postdoctoral Science Foundation [2016M602428]
机构署名:
本校为第一且通讯机构
院系归属:
包装与材料工程学院
冶金工程学院
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.
参考文献:
Amine K, 1996, J ELECTROCHEM SOC, V143, P1607, DOI 10.1149/1.1836686
Andrews Gavin J, 2004, Complement Ther Nurs Midwifery, V10, P175, DOI 10.1016/j.ctnm.2004.05.003
Bai MH, 2018, ADV MATER, V30, DOI 10.1002/adma.201801213
Baloukas B, 2014, THIN SOLID FILMS, V559, P9, DOI 10.1016/j.tsf.2013.10.030
Chen PY, 2012, PROG MATER SCI, V57, P1492, DOI 10.1016/j.pmatsci.2012.03.001

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