Proton Conductivity and Structural Dynamics in Cs5H 3(SO4)4/SiO2 Composites Full article
Journal |
Solid State Ionics
ISSN: 0167-2738 |
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Output data | Year: 2005, Volume: 176, Number: 7-8, Pages: 767-771 Pages count : 5 DOI: 10.1016/j.ssi.2004.10.018 | ||||
Tags | (1-x)Cs5H3(SO4)4•yH 2O/xSiO2, Composite, Proton electrolyte | ||||
Authors |
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Affiliations |
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Funding (2)
1 | Russian Foundation for Basic Research | 02-03-33332 |
2 | Russian Foundation for Basic Research | 03-03-39006 |
Abstract:
Cs5H3(SO4)4·yH2O and (1−x)Cs5H3(SO4)4/xSiO2 composite electrolytes (x=0.3–0.9) have been investigated by means of impedance, IR and Raman spectroscopy, differential scanning calorimetry and X-ray analysis. Cs5H3(SO4)4·yH2O has a phase transition to a high-conductive disordered state (σ∼10−2 S cm−1) at Ttr=418 K induced by changes in the structural-water content. This phase transition is shown to be reversible yet the converse transition from the high-temperature phase is slow. Although heterogeneous doping causes only a moderate increase in the low-temperature conductivity of the ionic salt, it stabilizes the high-conductive disordered state. The vibration spectroscopy data confirm the formation of the Cs5H3(SO4)4 disordered state in composites. The composite conductivity does not depend on the composition up to x=0.7 and decreases at x≥0.8 due to the percolation effect. The structural dynamics of SO4 tetrahedra is shown to correlate with the proton conductivity.
Cite:
Lavrova G.V.
, Ponomareva V.G.
, Burgina E.B.
Proton Conductivity and Structural Dynamics in Cs5H 3(SO4)4/SiO2 Composites
Solid State Ionics. 2005. V.176. N7-8. P.767-771. DOI: 10.1016/j.ssi.2004.10.018 WOS Scopus РИНЦ
Proton Conductivity and Structural Dynamics in Cs5H 3(SO4)4/SiO2 Composites
Solid State Ionics. 2005. V.176. N7-8. P.767-771. DOI: 10.1016/j.ssi.2004.10.018 WOS Scopus РИНЦ
Dates:
Submitted: | Apr 29, 2004 |
Accepted: | Oct 21, 2004 |
Published online: | Nov 13, 2004 |
Published print: | Feb 28, 2005 |
Identifiers:
Web of science | WOS:000227075900017 |
Scopus | 2-s2.0-12344262864 |
Elibrary | 13494707 |
Chemical Abstracts | 2005:61928 |
Chemical Abstracts (print) | 143:316129 |
OpenAlex | W2065530479 |