1999 Volume 67 Issue 3 Pages 243-247
To improve the durability of the platinized titanium anode, TiO2 gel prepared by sol-gel method was used as the binder between Pt film and Ti substrate. The durability of Pt/TiO2/Ti and Pt/Ti electrodes after amealing at 200, 300, 400 and 550°C were examined in 1M H2SO4 solution at an anodic current density of 200A/dm2, temperature being at 60°C. When the anode with TiO2 binder was annealed at 550°C, the durability of Pt/Ti anodes was improved by a factor of about 3, compared with usual type anode annealed at 200°C. It was found that TiO2 binder began to crystallize from amorphous to anatase structure at around 300°C. We assumed that a mixed phase of Pt, TiO2 and Ti could be formed at temperatures over 300°C.
