Fabrication of LiCoO2 thin films by sol-gel method and characterisation as positive electrodes for Li/LiCoO2 cells

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LiCoO2 thin films are receiving attention as positive electrodes (cathodes) for thin-film microbatteries. In this study, LiCoO2 thin films are fabricated by a sol-gel spin-coating method and a post-annealing process. The thermal decomposition behaviour of the precursor is investigated by thermogravimetry/differential thermal analysis TG/DTA and mass spectroscopy. The crystallinity, microstructure and electrochemical properties of the final films are also studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and galvanostatic charge-discharge cycling tests. Films heat-treated under appropriate conditions exhibit high capacity and good crystallinity and are therefore considered to be candidates as cathodes for thin-film microbatteries. (C) 2001 Elsevier Science BN. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2001-09
Language
English
Article Type
Article
Keywords

RECHARGEABLE LITHIUM BATTERIES; DEPOSITION; LIMN2O4; CATHODE

Citation

JOURNAL OF POWER SOURCES, v.99, no.1-2, pp.34 - 40

ISSN
0378-7753
URI
http://hdl.handle.net/10203/80526
Appears in Collection
MS-Journal Papers(저널논문)
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