Multilayer Nano Ti∕TiO[sub 2]–Pt Electrode for Coal-Hydrogen Production

Abstract

Multilayer nanoporous films were obtained by controlling electro-oxidation potentials in a sulfuric acid solution. After etching in a dilute hydrogen fluoride solution, the porous layers were deposited and intercalated with Pt and Pt–Ru to form and electrodes by using the cyclic voltammetric method. An electron diffraction spectroscopy was used to examine the electrode surface structure. The catalytic activity of the electrodes for electro-oxidation of coal shows that the multilayer nanoporous structure improves the electrode performance in comparison to a pure Pt electrode and a Pt coated Ti electrode. The (1:2) electrode shows even better catalytic activity than the . Anode gas analysis shows that the coal electro-oxidation produces mainly with trace amount of CO, and the cathode gas is pure hydrogen. We also observed some lower hydrocarbon by-products, such as methane. The amount of is only of the amount of produced.