Developing highly valuable electrocatalysts that can possess higher activity to replace conventional Pt catalysts for an oxygen reduction reaction (ORR) remains a major challenge. A cost-effective copper doped porous carbon (Cu-PC) has been synthesized here by carbonizing Cu that contains metal-organic framework (MOF)-5. Results show the Cu-PC exhibits ORR activity by following the four-electron route, and the number of electron transfers (n) is nearly 4. In addition, onset potential (E _o), half-wave potential (E _1/2), and limiting current density (J _L) are nearly equal and far better than commercial Pt/C (20 wt.%). The Cu-PC-800 exhibits superior activity with E _o 0.99 V and E _1/2 0.87 V compared to commercial Pt/C (E _o 0.94 V and E _1/2 0.83 V) as well as from several prepared catalysts. More importantly, the Cu-PC-800 displays superior stability in alkaline solution compared to Pt/C catalyst. These superior activities are attributed to the interaction of Cu nanoparticles with the support of porous carbon. The effects of carbonizing temperature and Cu doping on the ORR activity have been studied. The electrochemical tests showed that both metal doping and the temperature of pyrolysis could induce the electrocatalytic activity. The metal codoping and carbonizing approach will positively affect electrocatalyst efficiency and guide the development of new transition metal porous carbon ORR electrocatalysts.

开发具有更高活性的高价值电催化剂以取代传统的 Pt 催化剂用于氧还原反应 (ORR) 仍然是一个重大挑战。通过碳化含有金属有机骨架 (MOF)-5 的铜，这里合成了一种具有成本效益的掺铜多孔碳 (Cu-PC)。结果表明在Cu-PC表现出ORR活性通过以下的四电子路线，和电子传输（数Ñ）几乎4。另外，开始电位（ë _ø），半波电势（Ë _1/2）和极限电流密度 ( J _L ) 几乎相等并且远优于商业 Pt/C (20 wt.%)。Cu-PC-800 表现出优异的E _o活性0.99 V 和E _1/2 0.87 V 与商业 Pt/C 相比（E _o 0.94 V 和E _1/20.83 V）以及几种制备的催化剂。更重要的是，与 Pt/C 催化剂相比，Cu-PC-800 在碱性溶液中表现出优异的稳定性。这些优异的活性归因于铜纳米颗粒与多孔碳载体的相互作用。研究了碳化温度和Cu掺杂对ORR活性的影响。电化学测试表明，金属掺杂和热解温度均可诱导电催化活性。金属共掺杂和碳化方法将对电催化剂效率产生积极影响，并指导新型过渡金属多孔碳 ORR 电催化剂的开发。