Enhancement of the electrochemical properties of LiMn2O4 through Al3+ and F- co-substitution

被引：29

作者：

Bao, SJ ^{[1
]}

Liang, YY ^{[1
]}

Zhou, WH ^{[1
]}

He, BL ^{[1
]}

Li, HL ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2005年 / 291卷 / 02期

基金：

中国国家自然科学基金;

关键词：

lithium-ion batteries; LiAl0.1Mn1.9O3.9F0.1; chemical substitution; microwave-assisted sol-gel method;

D O I：

10.1016/j.jcis.2005.05.013

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：

The cathode-active materials LiMn2O4,LiAl0.1Mn1.9O4, and LiAl0.1Mn1.9O3.9F0.1 were synthesized by a microwave-assisted sol-gel method. The influence of different doping elements on the structural and electrochemical properties of the as-prepared samples was investigated by thermogravimetric analysis (TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM), and electrochemical experiments. The results indicated that fluorine plays an important role in controlling the morphology, and the doped aluminum could enhance significantly the stability of spinel-type LiMn2O4. The initial discharge capacity of the Al3+ and F- co-substituted specimen reached 129.8 mA h/g and has a high capacity retention after 40 cycles. The outstanding electrochemical properties of LiAl0.1Mn1.9O3.9F0.1 make it a possible promising cathode material for lithium-ion batteries. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：433 / 437

页数：5

共 22 条

[1] The elevated temperature performance of the LiMn2O4/C system:: failure and solutions [J].

Amatucci, G ;

Du Pasquier, A ;

Blyr, A ;

Zheng, T ;

Tarascon, JM .

ELECTROCHIMICA ACTA, 1999, 45 (1-2) :255-271

[2] Enhancement of the electrochemical properties of Li1Mn2O4 through chemical substitution [J].

Amatucci, GG ;

Pereira, N ;

Zheng, T ;

Plitz, I ;

Tarascon, JM .

JOURNAL OF POWER SOURCES, 1999, 81 :39-43

[3] A new three-volt spinel Li1+xMn1.5Ni0.5O4 for secondary lithium batteries [J].

Amine, K ;

Tukamoto, H ;

Yasuda, H ;

Fujita, Y .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (05) :1607-1613

[4] Electrochemical investigations of cobalt-doped LiMn2O4 as cathode material for lithium-ion batteries [J].

Arora, P ;

Popov, BN ;

White, RE .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1998, 145 (03) :807-815

[5] Preparation and characterization of partially substituted LiMyMn2-yO4 (M = Ni, Co, Fe) spinel cathodes for Li-ion batteries [J].

Bang, HJ ;

Donepudi, VS ;

Prakash, J .

ELECTROCHIMICA ACTA, 2002, 48 (04) :443-451

[6] Physical and electrochemical characterization of nanocrystalline LiMn2O4 prepared by a modified citrate route [J].

Choy, JH ;

Kim, DH ;

Kwon, CW ;

Hwang, SJ ;

Kim, YI .

JOURNAL OF POWER SOURCES, 1999, 77 (01) :1-11

[7] LI+ EXTRACTION/INSERTION REACTIONS WITH LIZN0.5MN1.5O4 SPINEL IN THE AQUEOUS-PHASE [J].

FENG, Q ;

KANOH, H ;

MIYAI, Y ;

OOI, K .

CHEMISTRY OF MATERIALS, 1995, 7 (02) :379-384

[8] Solid-state synthesis and electrochemical characterization of LiMyCr0.5-yMn1.5O4 (M = Fe or Al; 0.0<y<0.4) spinels [J].

Fey, GTK ;

Lu, CZ ;

Kumar, TP .

MATERIALS CHEMISTRY AND PHYSICS, 2003, 80 (01) :309-318

[9] Comparison of microwave-induced combustion and solid-state reaction for synthesis of LiMn2-xCrxO4 powders and their electrochemical properties [J].

Fu, YP ;

Su, YH ;

Lin, CH .

SOLID STATE IONICS, 2004, 166 (1-2) :137-146

[10] Dissolution of spinel oxides and capacity losses in 4V Li/LixMn2O4 coils [J].

Jang, DH ;

Shin, YJ ;

Oh, SM .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (07) :2204-2211

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