Ru- and Ti-based oxide electrocatalysts have been intensively studied for chlorine evolution reactions since their synergistic effect was demonstrated in commercial dimensionally stable anodes. Basically, oxide materials intrinsically possess a semiconducting nature; therefore, tuning conducting properties is important in achieving high electrocatalytic activity. Here, black TiO₂ nanotube arrays deposited with RuO₂ by pulsed electrodeposition are investigated as a three-dimensional supporting electrode for chlorine and hydrogen evolution. RuO₂-loaded black titania achieves high chlorine evolution activity (10 and 100 mA cm⁻² at 1.090 and 1.125 V vs. SCE) with a faradaic efficiency of 95.25% while RuO₂-loaded titania has no activity, though hydrogen evolution reaction performance is similar. This suggests that the type of titania support affects the conducting property at anodic potentials and chlorine evolution activity. This work provides new insights into the importance of black titania materials in enhancing the electrocatalytic activity of anodic reactions.

钌和钛基氧化物电催化剂已针对氯的放出反应进行了深入研究，因为它们的协同作用已在市售尺寸稳定的阳极中得到证明。基本上，氧化物材料本来就具有半导体性质。因此，调节导电性能对于实现高电催化活性很重要。在此，研究了通过脉冲电沉积用RuO ₂沉积的黑色TiO ₂纳米管阵列，作为氯和氢逸出的三维支撑电极。负载RuO _2的黑色二氧化钛可实现高氯释放活性（相对于SCE在1.090和1.125 V时10和100 mA cm ^-2）的法拉第效率为95.25％，而RuO ₂负载的二氧化钛没有活性，尽管析氢反应性能相似。这表明二氧​​化钛载体的类型影响阳极电势和氯放出活性的导电性能。这项工作为黑色二氧化钛材料在增强阳极反应的电催化活性方面的重要性提供了新的见解。