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Nitrogen, Phosphorus Dual-Doped Ordered Mesoporous Carbon Electrocatalyst for Oxygen Reduction Reaction

Thursday, 1 June 2017: 16:20
Churchill C1 (Hilton New Orleans Riverside)
G. Zhao, J. Xu, and T. Zhao (The Hong Kong University of Science and Technology)
To investigate the role of P in the dual-doped carbon electrocatalyst for oxygen reduction reaction (ORR) in alkaline media, three samples are prepared by varying the doping orders of N and P. Results show the resultant N-POMC (first doped with P, then N) exhibits an outstanding activity for ORR in alkaline media. The reason lies in the orientation effect of the first doped P on the later doped N, by increasing the ratio of graphitic-N significantly, confirmed by our experimental and DFT calculation. In addition, our results prove that the amount of graphitic-N is important in improving the activity for ORR. The doping strategy in this work is applicable to c0-doping strategy in exploring the synergy effect of different dopants and improving activity for ORR.