Two vanadium-substituted polyoxometalate acid salt gel electrolytes, [PyPS]HSiWVO and [PyPS]HSiWVO have been synthesized using a 1-(3-sulfonic group) propylpyridine (PyPS) and a Keggin vanadium-substituted heteropoly acid HSiWVO through an ionic self-assembly method, and adjusting the ratio of cation and anion. A substitution effect of the acid salt gel electrolytes has been investigated. Interestingly, when protons of the polyoxometalate acid salt gel electrolytes are substituted, both the conductivity and the phase transformation temperature increase. The fastest conductivity of these gel electrolytes was as high as 2.57 × 10 S cm at 110 °C.
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| http://dx.doi.org/10.1039/c8ra07160h | DOI Listing |
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