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Conductivity of Proton Electrolytes Based on Cesium Hydrogen Sulfate Phosphate

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Abstract

The conductivity and thermal behavior of cesium hydrogen sulfate phosphate are studied. New composite proton electrolytes (1 – x)Cs3(HSO4)2(H2PO4)–xSiO2 with a high conductivity in the range 60–200°C are prepared, and their transport properties are studied in a broad composition range (x = 0.3–0.95). Their conductivity exceeds that of CsHSO4–SiO2 composites and depends strongly on composition: it reaches a maximum at x = 0.7 (22 vol % SiO2) and drops at higher silica contents on account of percolation disruption. It is shown by differential scanning calorimetry and x-ray diffraction analysis that the introduction of fine-particle silica stabilizes the high-conductivity, disordered state of the mixed salt on the surface of the silica particles.

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Authors and Affiliations

  1. Institute of Solid-State Chemistry and Mechanochemistry, Siberian Division, Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk, 630128, Russia

    V. G. Ponomareva, E. S. Shutova & A. A. Matvienko

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  1. V. G. Ponomareva
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  2. E. S. Shutova
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  3. A. A. Matvienko
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Ponomareva, V.G., Shutova, E.S. & Matvienko, A.A. Conductivity of Proton Electrolytes Based on Cesium Hydrogen Sulfate Phosphate. Inorganic Materials 40, 721–728 (2004). https://doi.org/10.1023/B:INMA.0000034771.79865.da

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