Preparation and property of normal spinel LiMn2O4

被引：0
|
作者：
Yuan, Wen-Hui [1 ]
Wang, Chan-Yue [1 ]
Li, Li [2 ]
机构：
[1] Guangdong Provincial Key Laboratory of Green Chemicals, South China Univ. of Tech., Guangzhou 510640, China
[2] School of Environmental Science and Engineering, South China Univ. of Tech., Guangzhou 510640, China
来源：
Huanan Ligong Daxue Xuebao/Journal of South China University of Technology (Natural Science) | 2007年 / 35卷 / 06期
关键词：
Lithium adsorption capacity - Lithium manganate - Superfine powders;
D O I：
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中图分类号：
学科分类号：
摘要：
Super-fine powders of normal spinel LiMn2O4 were synthesized by means of EDTA-citric acid (EDTA-CA) chelating method, with the nitrates of lithium and manganese as the starting materials. The precursor of LiMn2O4 and the synthesized LiMn2O4 powders were then characterized by FTIR, TG-DSC, XRD, SEM, TEM and BET measurements. The results show that, when values of nLi:nMn and nMn+Li:nEDTA+CA are respectively 0.6 and 1:2, normal spinel LiMn2O4 with slight agglomeration can be synthesized after a calcination for 4 h at 600°C, and the BET specific surface area is 7.9948 m2/g with diameter being as small as 40 nm. It is also found that the largest lithium adsorption capacity of the leached LiMn2O4 reaches up to 5.3 mmol/g.
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页码：81 / 85
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