$Li^{+}$ ion conductivities in boro-tellurite glasses

Bhat, Harish M and Kandavel, M and Ganguli, Munia and Rao, KJ (2004) $Li^{+}$ ion conductivities in boro-tellurite glasses. In: Bulletin of Materials Science, 27 (2). pp. 189-198.

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Abstract

Lithium ion conductivity has been investigated in a boro-tellurite glass system, $LiCl-LiBO_{2}TeO_{2}$. In the absence of LiCl, the conductivity increases with increasing non-bridging oxygen (NBO)concentration. LiCl addition has little influence on total conductivity although the observed barriers are low. Formation of LiCl clusters appears evident. In the a.c. conductivity and dielectric studies, it is observed that the conductivity mechanism remains the same in all compositions and at all temperatures. A suggestion is made that $Li^{+}$ iontransport may be driven by bridging oxygen H non-bridging oxygen (BO <-> NBO) switching, which is why the two different types of $Li^{+}$ ions in the clusters and in the neighbourhood of NBOs, do not manifest in the conductivity studies.

Item Type:	Journal Article
Publication:	Bulletin of Materials Science
Publisher:	Indian Academy of Sciences
Additional Information:	Copyright for this article belongs to Indian Academy of Sciences.
Keywords:	Tellurite glasses;Li+ ion transport
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	21 Sep 2005
Last Modified:	19 Sep 2010 04:20
URI:	http://eprints.iisc.ac.in/id/eprint/3696

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