| Abstrakt: |
Solid acid composite electrolytes (1−x)CsH2PO4(CDP)/xSiO2 (0 ≤ x ≤ 0.35) were prepared and observed the structural, thermal, and transport properties by XRD, EDX, FESEM, FTIR, DSC, TGA, DTA, and conductivity measurements. The crystallite size was obtained between the range of 36 and 64 nm. We have investigated the superprotonic phase transition at 230 °C in CDP, at which the conductivity increased up to four orders of magnitude. The initial dehydration event in CDP occurred at 250 °C. The performance of CDP was increased due to the addition of SiO2 in the form of conductivity and stability. Thermal characterization showed that by introducing the additives, dehydration behavior shifted to the lower in DSC and DTA at the higher temperature. The lowest weight loss was found in 65CDP/35SiO2. The stable protonic conductivity was observed with time for CDP, 95CDP/05SiO2, and 85CDP/15SiO2 in a hermetically closed chamber. The electrodes were prepared by vapor deposition of silver. [ABSTRACT FROM AUTHOR] |
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