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Study on the action mechanism of doping transitional elements in spinel LiNi0.5Mn1.5O4
Liu, Guoqiang; Du, Yulong; Liu, Wenbin; Wen, Lei; Liu, GQ (reprint author), Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China.
2016-08-10
发表期刊ELECTROCHIMICA ACTA
ISSN0013-4686
卷号209页码:308-314
摘要Spinel LiNi0.5Mn1.5O4 is a very important and promising cathode material for lithium ion batteries. The strategy of doping elements is a common used way to improve its electrochemical properties. The action mechanism of doping elements in LiNi0.5Mn1.5O4 is complex. In this study, we synthesized the Cr, Fe-doped compounds LiNi0.45M0.1Mn1.45O4 (M = Cr, Fe) and pristine compound LiNi0.5Mn1.5O4 at the same annealing conditions. The as prepared samples display different morphological features. The thermogravimetric analysis shows different situation for these samples. Oxygen dissipation in the Cr-doped compound at high temperature is less than the other two samples. The XPS spectra display that the doping elements have influences on the chemical valence of Ni, and result in more Ni(III) amount in the Cr, Fe-doped products. The doped compounds exhibit excellent rate capability. At 10C-charge/10C-discharge rate, their capacities are 85 mAh g(-1), 74 mAh g(-1) and 50 mAh g(-1) for LiNi0.45Fe0.1Mn1.45O4, LiNi0.45Cr0.1Mn1.45O4 and LiNi0.5Mn1.5O4, respectively. (C) 2016 Elsevier Ltd. All rights reserved.
部门归属[liu, guoqiang ; du, yulong ; liu, wenbin] northeastern univ, sch met, shenyang 110819, peoples r china ; [liu, guoqiang] nankai univ, key lab adv energy mat chem, minist educ, tianjin 300071, peoples r china ; [wen, lei] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词Li-ion Battery Cathode High-voltage Doping Elements Electrochemical Performance
学科领域Electrochemistry
资助者Natural Science Foundation of Liaoning Province [2014020035]; National Natural Science Foundation of China [51574081]
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75773
专题中国科学院金属研究所
通讯作者Liu, GQ (reprint author), Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China.
推荐引用方式
GB/T 7714
Liu, Guoqiang,Du, Yulong,Liu, Wenbin,et al. Study on the action mechanism of doping transitional elements in spinel LiNi0.5Mn1.5O4[J]. ELECTROCHIMICA ACTA,2016,209:308-314.
APA Liu, Guoqiang,Du, Yulong,Liu, Wenbin,Wen, Lei,&Liu, GQ .(2016).Study on the action mechanism of doping transitional elements in spinel LiNi0.5Mn1.5O4.ELECTROCHIMICA ACTA,209,308-314.
MLA Liu, Guoqiang,et al."Study on the action mechanism of doping transitional elements in spinel LiNi0.5Mn1.5O4".ELECTROCHIMICA ACTA 209(2016):308-314.
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