Carbon-supported hydrous ruthenium oxide composite as electrochemical supercapacitors. 2. Capacitive Properties of Carbon Black Support

Abstract

Preparation of hydrous ruthenium oxide/carbon black nanocomposite material was performed by the impregnation method starting from hydrous RuO2 sol as a precursor. Black Pearls 2000 (R) (BP) and Vulcan (R) XC-72 R (XC) was used as supporting materials. Capacitive properties of supporting materials were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) in H2SO4 solution. Overall capacitance and capacitance profile throughout carbon black porous layer depend on its real surface area and morphology.