LiMn2O4thinfilmsderivedbyrapidthermalannealingandtheirperformanceascathodematerialsforLiionbattery

被引：0

作者：

WU Xianming HE Zeqiang MA Mingyou XIAO Zhuobing and XU Mingfei College of Chemistry and Chemical Engineering Jishou University Jishou China College of Metallurgical Science and Engineering Central South University Changsha China ^{[1
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机构：

来源：

RareMetals | 2006年 / 06期

关键词：

inorganic nonmetal materials; LiMn2O4 thin films; cyclic voltammetry; electrochemical impedance spectros- copy;

D O I：

暂无

中图分类号：

TB383.2 [];

学科分类号：

070205 ; 080501 ; 1406 ;

摘要：

The LiMn2O4 thin film as a cathode material was prepared through solution deposition followed by rapid thermal annealing (RTA). The phase identification and the study of surface morphology were carried out by X-ray diffraction and scanning electron microscopy. Electrochemical properties were examined by cyclic voltammetry, galvanostatic charge-discharge experiments, and electrochemical impedance spectroscopy. The results show that the film prepared by this method is homogeneous, dense, and crack-free. The thin film has a capacity of 38 μAh/(cm2?μm) with the capacity loss of 0.037% per cycle after being cycled for 100 times. The average diffusion coefficient for lithium ions in the RTA-derived LiMn2O4 thin film is 1 × 10?10 cm2?s?1.

引用

页码：620 / 624

页数：5

共 17 条

[1]

Inves- tigation of LiMn2O4 cathodes for use in rechargeable lithium batteries by linear sweep voltammetry (LSV) part II: Experimental study using thin films, single particles and composite electrodes. Hjelm A.K,Lindbergh G.,and Lundqvist A. J. Electroanal. Chem . 2001

[2]

Relationship between the electrochemical and particle properties of LiMn2O4 prepared by ultrasonic spray pyrolysis. Matsuda K,and Taniguchi I. J Power Sources . 2004

[3]

Structural and electrochemical properties of vanadium oxide thin films grown by d.c. and r.f. reactive sputtering at room temperature. Yoon Y.S,Kim J.S,and Choi S.H. Thin Solid Films . 2004

[4]

Thin-film lithium and lithium-ion bat- teries. Bates J.B,Dudney N.J,Neudecker B.,Ueda A,and Evans C.D. Solid State Ionics . 2000

[5]

Fabrication of LiMn2O4 thin films by sol-gel method for cathode materials of microbattery. Park Y.J,Kim J.G,Kim M.K,Chung H.T,Um W.S,Kim M.H,and Kim H.G. J. Power Sources . 1998

[6]

Aluminum oxide as a multi-function agent for improving battery performance of LiMn2O4 cathode. Eftekhari A. Solid State Ionics . 2004

[7]

Char- acterization and preparation of NiO-V2O5 composite film cathodes. Liu H.R,Chu Y. Q,Fu Z.W,and Qin Q.Z. J. Power Sources . 2003

[8]

Improvement of cy- clability of LiMn2O4 thin films by transition-metal substitution. Moon H.S,and Park J.W. Journal of Power Sources . 2003

[9]

Improvement of cyclability of LiMn2O4 thin films by transition-metal substitu- tion. Moon H.S.,and Park J. J Power Sources . 2003

[10]

AC im- pedance study of Li diffusion in WO3 films. Ho C,Raistrick I.D,and Huggins R.A. J. Elec- trochem. Soc . 1980

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