Developing high-performance and low-cost electrocatalysts toward methanol oxidation reaction (MOR) is essential for fuel cell applications. Herein, we report a defect engineering strategy integrating amorphization and phosphorization to construct directly interconnected networks of amorphous NiCo-based metal–organic framework nanowires (a-NiCo-MOFNWs) with phosphorus (P) doping. The resulting P-doped a-NiCo-MOFNWs (a-NiCo-MOFNWs-P) network displays superior MOR efficiency and long-term durability over 1000 cyclic voltammetry (CV) measurements. The special structure of directly interconnected networks and the synergistic effect between the amorphous MOFs and dispersed phosphorus species give rise to abundant exposed active sites, accelerated electron transport, and increased porosity for mass transfer, thus boosting the reaction kinetics of MOR. This work provides additional insights into the network assembly and structural evolution of one-dimensional (1D) MOFs, and also opens up new avenues for the design of highly reactive and robust non-precious metal-based electrocatalysts.

开发用于甲醇氧化反应 (MOR) 的高性能和低成本电催化剂对于燃料电池应用至关重要。在此，我们报告了一种结合非晶化和磷化的缺陷工程策略，以构建具有磷 (P) 掺杂的非晶 NiCo 基金属有机骨架纳米线 (a-NiCo-MOFNW) 的直接互连网络。由此产生的 P 掺杂 a-NiCo-MOFNWs (a-NiCo-MOFNWs-P) 网络在 1000 次循环伏安法 (CV) 测量中显示出卓越的 MOR 效率和长期耐久性。直接互连网络的特殊结构以及无定形 MOF 和分散的磷物质之间的协同效应导致大量暴露的活性位点、加速的电子传输和增加的传质孔隙率，从而提高了 MOR 的反应动力学。