@article{Guo2022, 
author = {Fanjuan Guo and Mingyue Zhang and Shicheng Yi and Xuxin Li and Rong Xin and Mei Yang and Bei Liu and Hongbiao Chen and Huaming Li and Yijiang Liu},
title = {Metal-coordinated porous polydopamine nanospheres derived Fe3N-FeCo encapsulated N-doped carbon as a highly efficient electrocatalyst for oxygen reduction reaction},
year = {2022},
journal = {Nano Research Energy},
volume = {1},
pages = {9120027},
keywords = {porous polydopamine nanospheres, melamine, in-situ synthesis, Fe3N-FeCo nanoparticles, oxygen reduction reaction (ORR) electrocatalyst},
url = {https://www.sciopen.com/article/10.26599/NRE.2022.9120027},
doi = {10.26599/NRE.2022.9120027},
abstract = {The exploration of high-efficiency, long-durability, and cost-effectiveness transition metal doped carbon materials to replace the commercial Pt/C in oxygen reduction reaction (ORR) is greatly desirable for promoting the advancement of sustainable energy devices. Herein, the Fe3N and FeCo alloy decorated N-doped carbon hybrid material (denoted Fe3N-FeCo@NC) is prepared and applied as the ORR catalyst, which is derived from the two-step pyrolysis of an intriguing complex consisted of metal-coordinated porous polydopamine (PDA) nanospheres (i.e., Fe-PDA@Co) and melamine. The resulting Fe3N-FeCo@NC delivers outstanding ORR activity with an onset potential (Eon) of 1.05 V, a half-wave potential (E1/2) of 0.89 V, as well as excellent long-term stability and methanol resistance over Pt/C. Interestingly, the home-made Zn-air battery with Fe3N-FeCo@NC as the air-cathode demonstrates much higher open-circuit voltage (1.50 vs. 1.48 V), power density (141 vs. 113 mW·cm−2) and specific capacity (806.6 vs. 660.6 mAh·gZn−1) than those of Pt/C counterpart. Such a remarkable ORR activity of Fe3N-FeCo@NC may stem from the synergistic effect of Fe3N and FeCo active species, the large surface area, the hierarchical porous structure and the exceptional sphere/sheet hybridized architecture.}
}