The Influence of Heterogeneous Dopant Porous Structure on the Properties of Protonic Solid Electrolyte in the CsHSO4-SiO2 System Научная публикация
Журнал |
Solid State Ionics
ISSN: 0167-2738 |
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Вых. Данные | Год: 1999, Том: 118, Номер: 3-4, Страницы: 317-323 Страниц : 7 DOI: 10.1016/S0167-2738(98)00429-9 | ||||
Ключевые слова | 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 | ||||
Авторы |
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Организации |
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Реферат:
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.
Библиографическая ссылка:
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
Даты:
Поступила в редакцию: | 6 июл. 1998 г. |
Принята к публикации: | 12 окт. 1998 г. |
Опубликована в печати: | 2 мар. 1999 г. |
Опубликована online: | 4 мар. 1999 г. |
Идентификаторы БД:
Web of science | WOS:000079046100017 |
Scopus | 2-s2.0-0033514796 |
РИНЦ | 13317750 |
Chemical Abstracts | 1999:127659 |
Chemical Abstracts (print) | 130:274490 |
OpenAlex | W2014852157 |