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Mesoporous cobalt oxide (Co3O4) films were deposited on ITO coated glass substrates by electrodeposition from an aqueous CoSO4 solution using CTAB (cetyltrimethylammonium bromide) as the templating agent. The structures of the synthesized films were characterized by X-ray diffraction, and X-ray photoelectron spectroscopy. The presence of mesoporosity was confirmed by transmission electron microscopy and small angle X-ray diffraction analyses. The mesoporous structures of the synthesized films were found to be strongly dependent on the deposition conditions, such as deposition voltage, deposition time, temperature and concentration of templating agent. Cyclic voltammetry and discharging curves were used to examine the electrochemical properties as a capacitor. The mesoporous films prepared with CTAB templating showed a much higher specific capacitance and current density than the nonporous electrode prepared without CTAB templating.

Pt-Au-WO3 ternary electrodes with various compositions were synthesized by electrochemical method from a mixture of H2PtCl6 aqueous solution, HAuCl4 aqueous solution, and W-peroxo complex. Their electrocatalytic activities for methanol oxidation were investigated. Film composition was controlled by varying the concentration of each component in electrolytes. Morphology and compositional analyses of the synthesized films were performed by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The catalytic activity and initial behavior of current density for methanol oxidation of the synthesized films were measured using cyclic voltammetry (CV) and chronoamperometry (CA) in a mixture of 0.5 M H2SO4 and 0.5 M CH3OH solution. Electrocatalytic activity for CO oxidation was also evaluated in 0.5 M H2SO4 solution. The activities of various electrodes for methanol oxidation were found to be strongly dependent on film composition. Pt-Au-WO3 electrodes exhibited higher activity for CO oxidation than pure Pt. The addition of proper amount of Au and WO3 significantly improved catalytic activity for methanol oxidation.

Mesoporous cobalt oxide (Co3O4) films were deposited on ITO coated glass substrates by electrodeposition from an aqueous CoSO4 solution using CTAB (cetyltrimethylammonium bromide) as the templating agent. The structures of the synthesized films were characterized by X-ray diffraction, and X-ray photoelectron spectroscopy. The presence of mesoporosity was confirmed by transmission electron microscopy and small angle X-ray diffraction analyses. The mesoporous structures of the synthesized films were found to be strongly dependent on the deposition conditions, such as deposition voltage, deposition time, temperature and concentration of templating agent. Cyclic voltammetry and discharging curves were used to examine the electrochemical properties as a capacitor. The mesoporous films prepared with CTAB templating showed a much higher specific capacitance and current density than the nonporous electrode prepared without CTAB templating.

Pt-Au-WO3 ternary electrodes with various compositions were synthesized by electrochemical method from a mixture of H2PtCl6 aqueous solution, HAuCl4 aqueous solution, and W-peroxo complex. Their electrocatalytic activities for methanol oxidation were investigated. Film composition was controlled by varying the concentration of each component in electrolytes. Morphology and compositional analyses of the synthesized films were performed by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The catalytic activity and initial behavior of current density for methanol oxidation of the synthesized films were measured using cyclic voltammetry (CV) and chronoamperometry (CA) in a mixture of 0.5 M H2SO4 and 0.5 M CH3OH solution. Electrocatalytic activity for CO oxidation was also evaluated in 0.5 M H2SO4 solution. The activities of various electrodes for methanol oxidation were found to be strongly dependent on film composition. Pt-Au-WO3 electrodes exhibited higher activity for CO oxidation than pure Pt. The addition of proper amount of Au and WO3 significantly improved catalytic activity for methanol oxidation.