Dip-Coated Ru-Mo-O/Ti Electrodes for Electrochemical Capacitors

Abstract RuO2-MoO3/Ti clectrodes prepared by a dip-coating method provide an extremely large pseudocapacitance showing that they have a potential for use as electrochemical capacitors. The highest pseudocapacitance was 208 F g−1 for RuO2(50)-MoO3(50)/Ti. The voltammetric charge of this electrode, 166 C g−1 between 0.3 and 1.1 V (vs. RHE), corresponds to 0.48 protons contributed to the adsorption and desorption on every loaded ruthenium, if the probable contribution of molybdenum to the pseudocapacitance was neglected.