Synthesis of spinel LiMn2O4 with manganese carbonate prepared by micro-emulsion method

被引：30

作者：

Ke, Du ^{[1
]}

Rong, Hu Guo ^{[1
]}

Dong, Peng Zhong ^{[1
]}

Lu, Qi ^{[2
]}

机构：

[1] Cent S Univ, Inst Light Met & Ind Electrochem, Sch Met Sci & Engn, Changsha 410083, Peoples R China

[2] Peking Univ, Coll Chem & Mol Engn, Dept Appl Chem, Beijing 100871, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Lithium battery; Spinel LiMn2O4; Micro-emulsion method; High power; LOW-TEMPERATURE SYNTHESIS; CATHODE MATERIALS; ELECTROCHEMICAL PROPERTIES; EMULSION METHOD; OXIDE SPINEL; ONE-STEP; LITHIUM; NANOCRYSTALLINE; BATTERIES; PERFORMANCE;

D O I：

10.1016/j.electacta.2009.10.058

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Micro-spherical particle of MnCO3 has been successfully synthesized in CTAB-C8H18-C4H9OH-H2O micro-emulsion system. Mn2O3 decomposed from the MnCO3 is mixed with Li2CO3 and sintered at 800 degrees C for 12 h, and the pure spine! LiMn2O4 in sub-micrometer size is obtained. The LiMn2O4 has initial discharge specific capacity of 124 mAh g(-1) at discharge current of 120 mA g(-1) between 3 and 4.2V. and retains 118 mAh g-1 after 110 cycles. High-rate capability test shows that even at a current density of 16C. capacity about 103 mAh g(-1) is delivered, whose power is 57 times of that at 0.2C. The capacity loss rate at 55 degrees C is 0.27% per cycle. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1733 / 1739

页数：7

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