The development of cathode materials with high cost-effectiveness, reliable performance, and good oxygen reduction activity are important to develop the next generation rechargeable metal-air battery system. Herein, we have developed a novel technique for synthesizing a catalyst with superior activity and durability for oxygen reduction reaction (ORR). Porous carbon with doped Cu nanoparticles was prepared by pyrolyzing Cu-containing ZIF-67 (Cu/ZIF-67). The findings show that Cu_0.5%/Co-NC-900 exhibits superior ORR performance with an onset potential (E_o) of 0.98 V and a half-wave potential (E_1/2) of 0.85 V, superior to all other prepared as well commercial Pt/C (20 wt.%, E_o 0.96 V and E_1/2 0.82 V) catalysts in an alkaline solution. The excellent ORR performance of Cu_0.5%/Co-NC-900 is due to the synergistic contribution to gradual mass transfer of Cu, Co and N doping structure, high pyridine content, and porous multilayer structure. This novel and rational metal doping strategy will dramatically enhance electrocatalyst operation and provide a template for new metal-doped porous carbon or catalyst designs.

具有高成本效益，可靠性能和良好的氧还原活性的阴极材料的开发对于开发下一代可充电金属空气电池系统至关重要。在本文中，我们开发了一种新颖的技术，用于合成具有优异活性和对氧还原反应（ORR）的耐久性的催化剂。通过热解含铜的ZIF-67（Cu / ZIF-67），制备了具有掺杂的Cu纳米粒子的多孔碳。结果表明，Cu _0.5％ / Co-NC-900表现出优异的ORR性能，其起始电势（E _o）为0.98 V，半波电势（E _1/2）为0.85 V，优于所有其他制备方法。商用Pt / C（20 wt。％，E _o 0.96 V和E _1/2碱性溶液中的0.82 V）催化剂。Cu _0.5％ / Co-NC-900的优异ORR性能归因于对Cu，Co和N掺杂结构的逐步传质，高吡啶含量和多孔多层结构的协同贡献。这种新颖而合理的金属掺杂策略将极大地增强电催化剂的操作，并为新型金属掺杂的多孔碳或催化剂设计提供模板。