Proton Conductive Silica Gels Doped with Several Acids and Their Application to Electric Double-Layer Capacitor
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Polyvinyl alcohol-containing silica gels doped with HClO<SUB>4</SUB>, H<SUB>2</SUB>SO<SUB>4</SUB>, or H<SUB>3</SUB>PO<SUB>4</SUB> prepared by the sol-gel method exhibited high proton conductivities of 10<SUP>−5</SUP>-10<SUP>−2</SUP>S cm<SUP>−1</SUP> at room temperature. Totally solid state electric double-layer capacitors fabricated using the gels as an electrolyte and activated carbon powder, ACP, as a polarizable electrode showed large capacitances of 31-44F/(gram of total ACP), which were comparable to those of the capacitors with liquid electrolytes.
- Chemistry Letters
Chemistry Letters 1998(11), 1189-1190, 1998-11-05
The Chemical Society of Japan