Abstract The electrochemical energy storage and delivery on the electrodes composed of hydrous ruthenium oxide (RuOx·nH2O) or activated carbon–hydrous ruthenium oxide (AC–RuOx) composites are found to strongly depend on the substrate employed. The contact resistance at the active material–graphite interface is much lower than that at the active material–stainless steel (SS) mesh inter…
Abstract The high specific capacitance of ruthenium oxide (denoted as RuOx) nanoparticles prepared by a modified sol–gel method with annealing in air for supercapacitorswas demonstrated in thiswork. The specific capacitance of activated carbon (denoted asAC) measured at 5 mA/cm2 is significantly increased from 26.8 to 38.7 F/g by the adsorption of RuOx nanoparticles with ultrasonic weltering…