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A Dawson structure vanadium-substituted heteropoly acid, H8P2W16V2O62·20H2O, has been synthesized and characterized by elemental analysis, IR, UV and XRD. Its proton conductivity was measured by the electrochemical impedance spectrum (EIS), and the result indicates that H8P2W16V2O62·20H2O is a kind of solid high-proton conductor with conductivity of 1.89×10−2Scm−1 at 18°C, and 80% relative humidity...
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