A highly active RuO₂IrO₂ electrocatalyst was developed via dip-coating/calcination method for oxygen evolution reaction (OER). The catalyst on Ti substrate with a 7/3 molar ratio between Ru and Ir showed the highest electrocatalytic activity for OER among composite samples in different molar ratios. Moreover, the properties of RuO₂IrO₂ grown on carbon paper were evaluated by proton exchange membrane water electrolysis single cell. Compared with the micron-particle structure of RuO₂IrO₂ catalyst on the Ti substrate, the catalyst grown on the carbon paper showed a novel nano dendrite shape and can be used directly as the gas diffusion electrode. Owing to the large surface area of the catalyst, the nano dendrite-shaped RuO₂IrO₂ catalyst exhibits excellent OER performance in the single cell. Furthermore, a cell voltage of 2.50 V is achieved under 200 mA cm⁻² at 30 °C by using the optimal composition RuO₂IrO₂ (Ru: Ir=7/3) and the commercial 20% Pt/C as anode and cathode, respectively.

通过浸涂/煅烧方法开发了一种用于析氧反应（OER）的高活性RuO ₂ IrO ₂电催化剂。在不同摩尔比的复合样品中，Ru和Ir摩尔比为7/3的Ti基底上的催化剂表现出最高的OER电催化活性。此外，通过质子交换膜水电解单电池评估了在碳纸上生长的RuO ₂ IrO ₂的性能。与RuO ₂ IrO ₂的微米级粒子结构比较在Ti基底上生长的催化剂，在碳纸上生长的催化剂呈现出新颖的纳米枝晶形状，可直接用作气体扩散电极。由于催化剂的大表面积，纳米枝晶状RuO ₂ IrO ₂催化剂在单电池中表现出优异的OER性能。此外，通过使用最佳组成 RuO ₂ IrO ₂ (Ru: Ir=7/3) 和商业 20% Pt/C 作为阳极和阴极，在 200 mA cm ^-2在 30 °C下实现了 2.50 V 的电池电压， 分别。