The Fe-N-C material is a promising non-noble-metal electrocatalyst for oxygen reduction reaction (ORR). Further improvement on the ORR activity is highly desired in order to replace Pt/C in acidic media. Herein, we developed a new-type of single-atom Fe-N-C electrocatalyst, in which Fe-Nx active sites were modified by P atoms. The half-wave potential of the optimized material reached 0.858 V, which is 23 mV higher than that of the pristine one in a 0.1 mol L−1 HClO4 solution. Density functional theory (DFT) calculations revealed that P doping can reduce the thermodynamic over potential of the rate determining step and consequently improve the ORR activity.
CITATION STYLE
Li, J. C., Zhong, H., Xu, M., Li, T., Wang, L., Shi, Q., … Shao, M. (2020). Boosting the activity of Fe-Nx moieties in Fe-N-C electrocatalysts via phosphorus doping for oxygen reduction reaction. Science China Materials, 63(6), 965–971. https://doi.org/10.1007/s40843-019-1207-y
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