CuFe2O4/SnO2 nanocomposites as anodes for Li-ion batteries

被引：74

作者：

Selvan, R. Kalai

Kalaiselvi, N. ^{[1
]}

Augustin, C. O.

Doh, C. H.

Sanjeeviraja, C.

机构：

[1] Cent Electrochem Res Inst, Karaikkudi 630006, Tamil Nadu, India

[2] Korea Electrotechnol Res Inst, Chang Won 641120, South Korea

[3] Alagappa Univ, Dept Phys, Karaikkudi 630003, Tamil Nadu, India

来源：

JOURNAL OF POWER SOURCES | 2006年 / 157卷 / 01期

关键词：

copper ferrite; nanocomposites; lithium-ion batteries; specific capacity; Coulombic efficiency;

D O I：

10.1016/j.jpowsour.2005.07.030

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：

Ultrafine powders of nanocrystalline CuFe2O4 and CuFe2O4/10 wt.% SnO2 nanocomposites are prepared by a urea-nitrate combustion method. Phase pure and highly crystalline CuFe2O4 (tetragonal structure) and CuFe2O4/SnO2 (cubic structure) are obtained after sintering at 1100 degrees C. The average particle size is 10-20 and 20-30 nm, respectively. Both the nanoferrite anodes have an excellent specific capacity of greater than 800 mAh g(-1) versus Li metal. It is concluded that SnO2 doping improves the coulombic efficiency of copper ferrite anodes from 65 to 99.5% via an enhanced structural stability. (c) 2005 Elsevier B.V All rights reserved.

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页码：522 / 527

页数：6

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