Boosting the activity of Fe-Nx moieties in Fe-N-C electrocatalysts via phosphorus doping for oxygen reduction reaction
Author ORCID Identifier
Science China Materials
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.
oxygen reduction, P-doping, single-atom catalysts
Li, Jin Cheng; Zhong, Hong; Xu, Mingjie; Li, Tao; Wang, Liguang; Shi, Qiurong; Feng, Shuo; Lyu, Zhaoyuan; Liu, Dong; Du, Dan; Beckman, Scott P.; Pan, Xiaoqing; Lin, Yuehe; and Shao, Minhua, "Boosting the activity of Fe-Nx moieties in Fe-N-C electrocatalysts via phosphorus doping for oxygen reduction reaction" (2020). NIU Bibliography. 497.
Department of Chemistry and Biochemistry