Fe Content Effects on Electrochemical Properties of 0.3Li2MnO3•0.7LiMnxNixFe(1-2x)/2O2 Cathode Materials

被引：4
作者：
Li, Dong [1 ]
Lian, Fang [1 ]
Qiu, Weihua [1 ]
Li, Fushen [1 ]
Chou, Kuo-Chih [2 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Dept Chem Phys, Beijing 100083, Peoples R China
来源：
RENEWABLE AND SUSTAINABLE ENERGY, PTS 1-7 | 2012年 / 347-353卷
关键词：
Rechargeable Lithium Battery; Positive Electrode Material; Fe-substituted; low-heating solid-state reaction; LITHIUM-ION BATTERIES; LI2MNO3;
D O I：
10.4028/www.scientific.net/AMR.347-353.3518
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The cathode materials 0.3Li(2)MnO(3)center dot 0.7LiMn(x)Ni(x)Fe((1-2x)/2)O(2)(0.35 <= x <= 0.5) were synthesized via low-heating solid-state reaction method. The prepared samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), thermogravimetric analysis (TG) and differential thermal analysis (DTA), and their electrochemical performances were also investigated here. The FESEM images of samples revealed that the particle of Fe-substituted samples became smaller and size distribution got narrower compared with the materials without Fe-doping. The results showed that electrochemical properties of the material depended on the content of Fe. 0.3Li(2)MnO(3)center dot 0.7LiMn(0.4)Ni(0.4)Fe(2)O(2) maintained 99.5% of the reversible capacity after 60 cycles.
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页码：3518 / +
页数：2
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