Herein, a high-performance electrocatalyst for oxygen reduction reaction (ORR), which is composed of highly dispersed Co nanoclusters loaded on conductive oxygen-deficient tungsten oxynitride framework structured with three-dimensionally ordered macropores (3DOM Co@WNO) was proposed. The tungsten oxynitride carrier decorated with oxygen vacancies can improve the conductivity and electrochemical stability of the catalyst. At the same time, it offers strong anchoring interaction and ensures good dispersion for the loaded Co metals, thus achieving high catalytic activity and durability. Theoretical calculations show that electron transfer occurs at the interface between WNO and Co₄ leading to a higher accumulation of electrons around the Co site, promoting the ORR reaction kinetics. Due to these advantages, 3DOM Co@WNO was found to possess ORR activity comparable to Pt/C and superior primary Zn-air battery performance over Pt/C and excellent stability as well. This study advances the evolvement of high-efficiency and durable ORR electrocatalysts using intrinsically robust and conductive oxynitride support strategy with strong metal-support interactions.

在此，提出了一种用于氧还原反应（ORR）的高性能电催化剂，该催化剂由负载在具有三维有序大孔（3DOM Co@WNO）的导电缺氧氮氧化钨骨架上的高度分散的 Co 纳米团簇组成。氧空位修饰的氧氮化钨载体可以提高催化剂的电导率和电化学稳定性。同时，它提供了强大的锚定相互作用，并确保负载的Co金属具有良好的分散性，从而实现高催化活性和耐久性。理论计算表明电子转移发生在WNO和Co _{4的界面处}导致 Co 位点周围的电子积累更多，从而促进了 ORR 反应动力学。由于这些优势，发现 3DOM Co@WNO 具有与 Pt/C 相当的 ORR 活性和优于 Pt/C 的一次锌空气电池性能和出色的稳定性。本研究使用具有强金属-载体相互作用的内在稳健和导电的氧氮化物载体策略推进了高效和耐用的 ORR 电催化剂的发展。