Synthesis and electrochemical properties of spherical spinel Li1.05M0.05Mn1.9O4 (M = Mg and Al) as a cathode material for lithium-ion batteries by co-precipitation method

被引：20

作者：

Lee, K. -S. ^{[1
]}

Bang, H. J. ^{[1
]}

Myung, S. -T. ^{[2
]}

Prakash, J. ^{[3
]}

Amine, K. ^{[4
]}

Sun, Y. -K. ^{[1
]}

机构：

[1] Hanyang Univ, Ctr Informat & Commun Mat, Dept Chem Engn, Seoul 133791, South Korea

[2] Iwate Univ, Grad Sch Engn, Dept Frontier Mat & Funct Engn, Morioka, Iwate 0208551, Japan

[3] IIT, Dept Environm Chem & Engn, Chicago, IL 60616 USA

[4] Argonne Natl Lab, Electrochem Technol Program, Div Chem Engn, Argonne, IL 60439 USA

来源：

JOURNAL OF POWER SOURCES | 2007年 / 174卷 / 02期

关键词：

lithium-ion battery; cathode; spinel; co-precipitation; substitution;

D O I：

10.1016/j.jpowsour.2007.06.110

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cation (Mg and Al)-substituted spinel were synthesized using metal oxide precursor by co-precipitation method. XRD revealed that the prepared substituted spinel has spinel structure with Fd3m space group. In order to compensate the decreased initial capacity of cation-substituted spinel, partial anion (F) substitution was also carried out. The cycling performance of all the substituted spinel was improved, compared to the Li1.05Mn1.95O4 at 55 degrees C. Li1.05Al0.1Mn1.85O3.F-95(0.05) showed better capacity retention than the other substituted spinels. Both cation and anion substitution appeared to be effective for improving the cycling performance of spinel material at elevated temperature. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：726 / 729

页数：4

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