Rao, K. J. ; Benqlilou-Moudden, H. ; Couturier, G. ; Vinatier, P. ; Levasseur, A. (2002) Structure and electrical properties of sputtered lithium cobaltite thin films Materials Research Bulletin, 37 (7). pp. 1353-1367. ISSN 0025-5408
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0025-5408(02)00756-0
Abstract
LixCoOy films with x<1 and y>2 have been prepared by radio-frequency (rf) sputtering from high temperature (HT) LiCoO2 targets. Their structures have been examined with high resolution electron microscopy. Conductivities have been studied between 77 and 400 K. The electrochemical behaviour of film electrodes have been investigated with Li/LiClO4-PC/LixCoOy cells. The annealed films consist of nanocrystalline domains with amorphous boundaries. Electrical conductivities appear to arise from variable-range hopping (VRH) of holes. The films form good electrodes with operating potentials between 2.7 and 3.8 V. The observations have been discussed on the basis of a tentative and heuristic molecular orbital based energy band diagram.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | C. X-ray diffraction; D. Electrical properties; D. Microstructure |
| ID Code: | 91053 |
| Deposited On: | 16 May 2012 08:32 |
| Last Modified: | 16 May 2012 08:32 |
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