College of Life Science and Technology, Huazhong University of Science and Technology, National Engineering Research Center for Nanomedicine, Wuhan, 430074, China.
School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
Chem Asian J. 2018 Sep 17;13(18):2671-2676. doi: 10.1002/asia.201800747. Epub 2018 Aug 1.
Highly porous carbonaceous nonprecious metal catalysts for the oxygen reduction reaction are prepared by carbonization of low-cost metalloporphyrin-based hyper-crosslinked polymers (MPH-X). With high surface area (2768 m g ), hierarchical porous structure, and high metal loading (9.97 wt %), the obtained hyperporous carbon MPH-Fe/C catalyst exhibits high oxygen reduction reaction (ORR) activity with a half-wave potential (0.816 V) that is comparable to the 0.819 V of commercial Pt/C. Stability tests reveal that MPH-Fe/C also exhibits outstanding long-term durability and methanol tolerance. Our findings may offer an alternative approach to produce nonprecious metal ORR catalysts on a large scale owing to the low-cost MPH-X precursors with diverse metal types.
通过碳化基于低价金属卟啉的超高交联聚合物（MPH-X），制备了用于氧还原反应的高多孔碳质非贵金属催化剂。所获得的具有高比表面积（2768 m 2 /g）、分级多孔结构和高金属负载量（9.97wt%）的超多孔碳 MPH-Fe/C 催化剂表现出高氧还原反应（ORR）活性，半波电位（0.816 V）可与商业 Pt/C 的 0.819 V 相媲美。稳定性测试表明，MPH-Fe/C 还表现出出色的长期耐久性和甲醇耐受性。由于具有多种金属类型的低成本 MPH-X 前体，我们的发现可能为大规模生产非贵金属 ORR 催化剂提供了一种替代方法。
