Fabricating macroporous RuO2–TiO2 electrodes using polystyrene templates for high chlorine evolution efficiencies

In dimensionally stable anodes, RuO 2 -TiO 2 has emerged as one of the fundamental anode materials in terms of practical application because of its high stability and catalytic performance toward chlorine evolution. Nevertheless, high chlorine evolution efficiency is still required for an effective chlorine production process. In this study, high chlorine electrocatalytic active RuO 2 -TiO 2 electrodes were fabricated using several ranges of polystyrene microsphere templates (0.1, 0.46 and 1.1 m) resulting in novel three-dimensional ordered macroporous structures. Higher chlorine evolution efficiency was observed in the macroporous RuO 2 -TiO 2 electrodes than that in the nontemplated electrode at the same Ru loadings. In particular, a macroporous electrode fabricated with a specific polystyrene size (0.46 m) exhibited the highest chlorine evolution efficiency in this study indicating th…