The Influence of Heterogeneous Dopant Porous Structure on the Properties of Protonic Solid Electrolyte in the CsHSO4-SiO2 System Full article
Journal |
Solid State Ionics
ISSN: 0167-2738 |
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Output data | Year: 1999, Volume: 118, Number: 3-4, Pages: 317-323 Pages count : 7 DOI: 10.1016/S0167-2738(98)00429-9 | ||||
Tags | Amorphous materials; Differential scanning calorimetry; Doping (additives); Electric conductivity of solids; Electric impedance; Enthalpy; Melting; Pore size; Silica; Sulfur compounds; Transport properties; X ray diffraction analysis | ||||
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Abstract:
Transport, thermal and structural properties of (1−x)CsHSO4–xSiO2 (where x=0–0.9) composite solid electrolytes have been studied by complex impedance, DSC and X-ray diffraction methods. The used highly dispersed silica are different in their specific surface area (13–580 m2/g), pore size (R=14–1000 Å) and pore size distribution. It was shown that the low-temperature phase conductivity of composites is ca 2–2.5 orders of magnitude higher than that of the individual CsHSO4. Composite properties depend on content and pore size of SiO2. The low-temperature phase conductivity is maximum at x=0.5–0.7. The optimum pore size of heterogeneous dopant is in a range of 35–100 Å, where the most composite conductivity increase takes place and thermodynamic and structural properties change markedly (`dimensional effect'). For composites based on these silicas the enthalpies of CsHSO4 superionic phase transition and melting considerably decrease. As x increases the ionic component becomes either partially or completely amorphous. The CsHSO4 dispersion most likely proceeds in composites based on silica, the pore size of which is 170 Å.
Cite:
Ponomareva V.G.
, Lavrova G.V.
, Simonova L.G.
The Influence of Heterogeneous Dopant Porous Structure on the Properties of Protonic Solid Electrolyte in the CsHSO4-SiO2 System
Solid State Ionics. 1999. V.118. N3-4. P.317-323. DOI: 10.1016/S0167-2738(98)00429-9 WOS Scopus РИНЦ
The Influence of Heterogeneous Dopant Porous Structure on the Properties of Protonic Solid Electrolyte in the CsHSO4-SiO2 System
Solid State Ionics. 1999. V.118. N3-4. P.317-323. DOI: 10.1016/S0167-2738(98)00429-9 WOS Scopus РИНЦ
Dates:
Submitted: | Jul 6, 1998 |
Accepted: | Oct 12, 1998 |
Published print: | Mar 2, 1999 |
Published online: | Mar 4, 1999 |
Identifiers:
Web of science | WOS:000079046100017 |
Scopus | 2-s2.0-0033514796 |
Elibrary | 13317750 |
Chemical Abstracts | 1999:127659 |
Chemical Abstracts (print) | 130:274490 |
OpenAlex | W2014852157 |