The rational design of highly active and robust electrocatalysts to replace platinum-based materials for oxygen reduction reaction (ORR) is very important for commercializing the polymer electrolyte membrane fuel cell. During the decades, various approaches have been employed to develop hetero-atom doped porous carbon as promising electrocatalyst for ORR. The two important criteria in the electrocatalytic activity of hetero-atom doped carbon are the mass transport and existence of metal. The mass transport can be facilitated by adopting larger pore such as mesopore. Although numerous papers reported the highly active and durable carbon based electrocatalysts, the exact role of the mass transport, metal sites and its correlations are still not well-understood. Here, we synthesized four different MOF derived N-doped carbons with different in porosity which comes from mesopores and presence of metal sites. We verify the effects of mass transport and metal in N-doped carbon by comparing four controlled samples. These findings reveal the role of porosity and metal in ORR activity and will provide the important guideline for future advances.

Effects of mass transport and metal in N-doped carbon for oxygen reduction reaction

256th National Meeting (2018)

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