RuO2/activated carbon composites as a positive electrode in an alkaline elect…

Abstract Hydrous ruthenium oxide was synthesized by a sol-gel method on the surface of activated carbon (AC). After heat treatment at 150°C, the RuO2/AC composite was used as a positive electrode material in an alkaline electrochemical capacitor. Several composites with different Ru contents were prepared and studied. It was found that the composite containing 30 w/% Ru had a specific capacit…