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Title: | Novel LISICON mixed conductors, Li4 ? 2xCoxGeO4 |
Authors: | Sumathipala, H.H. Dissanayake, M.A.K.L. West, A.R. |
Keywords: | Mixed conductors; LISICON; Lithium cobalt germanate; Transference numbers |
Issue Date: | 1996 |
Publisher: | Solid State Ionics |
Abstract: | A novel LISICON type ? solid solution range has been found in the system Li4 ? 2xCoxGeO4 for 0.15 ? x ? 0.8. The highest net conductivity, 8.4 ? 10?6Scm?1, was observed for x = 0.25 at 27 �C rising to 3.35 ? 10?3Scm?1 at 300 �C with an activation energy of 0.71 eV. A charge/discharge polarisation technique was used to investigate the transference number of these materials. Results corroborate those obtained by low frequency a.c. impedance measurements and show the occurrence of mixed Li+ ion and electronic conductivity. The relative amounts of each vary with composition; x = 0.25 has both the highest conductivity and the highest ionic transference number, 0.19. |
URI: | http://repository.kln.ac.lk/handle/123456789/4011 |
ISSN: | 0167-2738 |
Appears in Collections: | Physics |
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