Electrodeposited SiO2 film: a promising interlayer of a highly active Ti electrode for the oxygen evolution reaction

A Ti-supported IrO₂ or RuO₂ coated electrode with significantly improved electrocatalytic activity for the OER was fabricated using a highly porous electrodeposited silica film as the interlayer. The highly porous morphology ensures its high activity. The “inter-locking” structure between the active oxide layer and SiO₂ film prolongs its life.