@article{Meng2021, 
author = {Zihan Meng and Neng Chen and Shichang Cai and Jiawei Wu and Rui Wang and Tian Tian and Haolin Tang},
title = {Rational design of hierarchically porous Fe-N-doped carbon as efficient electrocatalyst for oxygen reduction reaction and Zn-air batteries},
year = {2021},
journal = {Nano Research},
volume = {14},
number = {12},
pages = {4768-4775},
keywords = {hierarchically porous structure, Fe-N-doped carbon, electrocatalysts, oxygen reduction reaction, Zn-air batteries},
url = {https://www.sciopen.com/article/10.1007/s12274-021-3422-z},
doi = {10.1007/s12274-021-3422-z},
abstract = {The rational design and construction of hierarchically porous nanostructure for oxygen reduction reaction (ORR) electrocatalysts is crucial to facilitate the exposure of accessible active sites and promote the mass/electron transfer under the gas-solid-liquid triple-phase condition. Herein, an ingenious method through the pyrolysis of creative polyvinylimidazole coordination with Zn/Fe salt precursors is developed to fabricate hierarchically porous Fe-N-doped carbon framework as efficient ORR electrocatalyst. The volatilization of Zn species combined with the nanoscale Kirkendall effect of Fe dopants during the pyrolysis build the hierarchical micro-, meso-, and macroporous nanostructure with a high specific surface area (1, 586 m2·g−1), which provide sufficient exposed active sites and multiscale mass/charge transport channels. The optimized electrocatalyst exhibits superior ORR activity and robust stability in both alkaline and acidic electrolytes. The Zn-air battery fabricated by such attractive electrocatalyst as air cathode displays a higher peak power density than that of Pt/C-based Zn-air battery, suggesting the great potential of this electrocatalyst for Zn-air batteries.}
}