LITHIUM COBALT SPINEL OXIDE: A STRUCTURAL AND ELECTROCHEMICAL STUDY
Lithium cobaltite, LiCo(2)0(4), prepared by thermal decomposition of nitrates salts was synthesized at 400 °C. X-ray Rietveld refinement showed the presence of two phases: a cubic spinel (Co(3)0(4)) and other corresponding to spinel-like, which could not be classified as LiCo(2)0(4) or LiCo0(2) sinc...
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| Autores principales: | , , , |
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| Lenguaje: | English |
| Publicado: |
Sociedad Chilena de Química
2008
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| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072008000200010 |
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| Sumario: | Lithium cobaltite, LiCo(2)0(4), prepared by thermal decomposition of nitrates salts was synthesized at 400 °C. X-ray Rietveld refinement showed the presence of two phases: a cubic spinel (Co(3)0(4)) and other corresponding to spinel-like, which could not be classified as LiCo(2)0(4) or LiCo0(2) since both crystallized in Fd3m S.G. Electrochemical determinations (charge-discharge curves and impedance spectroscopy measurements) showed that Li+ ion is inserted into the spinel lattice, with D = 8 10-16 cm s-1 at 2.00-2.25 V potential range whereas lithium extraction occurred at 3.2-3.8 V potential range. |
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