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A new solid high-proton conductor,H7[Ga(H2O)P2W17O61].18H2O,a substituted heteropoly acid with Dawson structure,has been synthesized by the degradation/ion-exchange/freezing method.The product was characterized by potentiometric titration,chemical analysis,IR,UV,XRD and TG-DTA.Complex impedance measurements show a high conductivity(5.44×10-3 S/cm at 50℃),with an activation energy for proton conduction of 36.04 kJ/mol.The mechanism of proton conduction is the Vehicle mechanism.
A new solid high-proton conductor, H7 [Ga (H2O) P2W17O61] .18H2O, aubstituted heteropolyacid with Dawson structure, has been synthesized by the degradation / ion-exchange / freezing method.The product was characterized by potentiometric titration, chemical analysis, IR, UV, XRD and TG-DTA. Complex impedance measurements show a high conductivity (5.44 × 10 -3 S / cm at 50 ° C.) with an activation energy for proton conduction of 36.04 kJ / mol. conduction is the Vehicle mechanism.