The Effect of Acid Etching Process on Surface Morphology and Electrocatalytic Capability of RuO_2-IrO_2-TiO_2/Ti Anode

摘要

Titanium substrate was etched by oxalic acid and hydrochloric acid respectively. Then the anodes of RuO_2-IrO_2-TiO_2/Ti were prepared by Pechini method. The surface morphology of anodes was studied with SEM, EDX and XRD. The electrocatalytic capability of anodes was studied by polarization curve and cyclic voltammetry curve. The effect of Acid etching process on anode life was studied by accelerated life test. The results show that there was an obvious effect of acid etching on surface morphology of the anodes. The result indicates that the anode with hydrochloric acid etching have the better electrocatalytic capability and accelerated life.