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Solid polymer electrolytes containing phosphotungstic acid (PWA) and/or silicotungstic acid (SiWA) in polyvinyl alcohol (PVA) were investigated for their proton conductivities. Enhanced conductivity was obtained when mixing PWA and SiWA at equal ratio. This polymer electrolyte was found viable for electrochemical capacitors. Thermal and structural analyses were conducted with DSC, XRD, and FTIR. The...
A solid polymer electrolyte with a poly (vinyl-alcohol) (PVA) matrix and a mixture of H 3 PW 12 O 40 (PWA) and H 4 SiW 12 O 40 (SiWA) as proton conductor was developed. The proton conductivity of this polymer electrolyte reached 0.013scm −1 at room temperature with a very low activation energy of 3.9kJmol −1 at its optimal ratio (when...
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