Abstract
(1 – x)Cs5H3(SO4)4 · yH2O–xSiO2 composite electrolytes were prepared in the composition range x = 0.3–0.9 and were characterized by impedance measurements, differential scanning calorimetry, and x-ray diffraction analysis. The results indicate that the introduction of fine SiO2 particles stabilizes the high-conductivity, disordered (nearly amorphous) state of the salt, which is similar to that in pure Cs5H3(SO4)4 above the phase transition (> 420 K). The conductivity of the composites is independent of SiO2 content up to x = 0.7 and decreases at x ≥ 0.8 owing to percolation disruption. The disordering of Cs5H3(SO4)4 · yH2O is reversible and is due to changes in the content of water of hydration.
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Lavrova, G.V., Ponomareva, V.G. Disordering of Pentacesium Trihydrogen Tetrasulfate in Cs5H3(SO4)4–SiO2 Composite Proton Electrolytes. Inorganic Materials 38, 1172–1177 (2002). https://doi.org/10.1023/A:1020931019596
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DOI: https://doi.org/10.1023/A:1020931019596