Zinc-assisted MgO template synthesis of porous carbon-supported Fe-Nx sites for efficient oxygen reduction reaction catalysis in Zn-air batteries

Xiangyu Lu; Hao Xu; Peixia Yang; Lihui Xiao; Yaqiang Li; Jingyuan Ma; Ruopeng Li; Lilai Liu; Anmin Liu; Veniamin Kondratiev; Oleg Levin; Jinqiu Zhang; Maozhong An

doi:10.1016/j.apcatb.2022.121454

Zinc-assisted MgO template synthesis of porous carbon-supported Fe-N_x sites for efficient oxygen reduction reaction catalysis in Zn-air batteries

Xiangyu Lu
, Hao Xu
, Peixia Yang^*
, Lihui Xiao
, Yaqiang Li
, Jingyuan Ma
, Ruopeng Li
, Lilai Liu
, Anmin Liu
, Veniamin Kondratiev
, Oleg Levin
, Jinqiu Zhang
, Maozhong An

^*Corresponding author for this work

School of Chemistry and Chemical Engineering, Harbin Institute of Technology
CAS - Shanghai Advanced Research Institute
Heilongjiang University of Science and Technology
Dalian University of Technology
St. Petersburg State University

Research output: Contribution to journal › Article › peer-review

134 Scopus citations

Abstract

Atomically dispersed iron-nitrogen-carbon catalysts offer great potential in oxygen reduction reaction (ORR), yet the poor exposure and low density of Fe-N_x sites causes relatively low ORR activity. Herein, a zinc-assisted MgO template strategy is reported to construct porous carbon-supported Fe-N₄ sites (Fe-N-C). Iron atoms surrounded by zinc species are converted to abundant Fe-N₄ sites rather than Fe containing nanoparticles. Meanwhile, both the zinc species and the MgO template can effectively produce porous structure so as to increase the utilization of Fe-N₄ sites. Fe-N-C achieves superior ORR performance and stability in alkaline medium. Theoretical calculations manifest that Fe-N₄ sites can narrow the energy barrier for ORR. Moreover, finite element simulation exhibits the porous framework in Fe-N-C could significantly accelerate the diffusion of O₂. Therefore, Fe-N-C provides a high peak power density and superior discharge ability toward Zn-air batteries.

Original language	English
Article number	121454
Journal	Applied Catalysis B: Environmental
Volume	313
DOIs	https://doi.org/10.1016/j.apcatb.2022.121454
State	Published - 15 Sep 2022
Externally published	Yes

Keywords

Atomically dispersed catalysts
Fe-N sites
Oxygen reduction
Porous structure
Zn-air batteries

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10.1016/j.apcatb.2022.121454

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Lu, X., Xu, H., Yang, P., Xiao, L., Li, Y., Ma, J., Li, R., Liu, L., Liu, A., Kondratiev, V., Levin, O., Zhang, J., & An, M. (2022). Zinc-assisted MgO template synthesis of porous carbon-supported Fe-N_x sites for efficient oxygen reduction reaction catalysis in Zn-air batteries. Applied Catalysis B: Environmental, 313, Article 121454. https://doi.org/10.1016/j.apcatb.2022.121454

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title = "Zinc-assisted MgO template synthesis of porous carbon-supported Fe-Nx sites for efficient oxygen reduction reaction catalysis in Zn-air batteries",

abstract = "Atomically dispersed iron-nitrogen-carbon catalysts offer great potential in oxygen reduction reaction (ORR), yet the poor exposure and low density of Fe-Nx sites causes relatively low ORR activity. Herein, a zinc-assisted MgO template strategy is reported to construct porous carbon-supported Fe-N4 sites (Fe-N-C). Iron atoms surrounded by zinc species are converted to abundant Fe-N4 sites rather than Fe containing nanoparticles. Meanwhile, both the zinc species and the MgO template can effectively produce porous structure so as to increase the utilization of Fe-N4 sites. Fe-N-C achieves superior ORR performance and stability in alkaline medium. Theoretical calculations manifest that Fe-N4 sites can narrow the energy barrier for ORR. Moreover, finite element simulation exhibits the porous framework in Fe-N-C could significantly accelerate the diffusion of O2. Therefore, Fe-N-C provides a high peak power density and superior discharge ability toward Zn-air batteries.",

keywords = "Atomically dispersed catalysts, Fe-N sites, Oxygen reduction, Porous structure, Zn-air batteries",

author = "Xiangyu Lu and Hao Xu and Peixia Yang and Lihui Xiao and Yaqiang Li and Jingyuan Ma and Ruopeng Li and Lilai Liu and Anmin Liu and Veniamin Kondratiev and Oleg Levin and Jinqiu Zhang and Maozhong An",

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doi = "10.1016/j.apcatb.2022.121454",

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TY - JOUR

T1 - Zinc-assisted MgO template synthesis of porous carbon-supported Fe-Nx sites for efficient oxygen reduction reaction catalysis in Zn-air batteries

AU - Lu, Xiangyu

AU - Xu, Hao

AU - Yang, Peixia

AU - Xiao, Lihui

AU - Li, Yaqiang

AU - Ma, Jingyuan

AU - Li, Ruopeng

AU - Liu, Lilai

AU - Liu, Anmin

AU - Kondratiev, Veniamin

AU - Levin, Oleg

AU - Zhang, Jinqiu

AU - An, Maozhong

PY - 2022/9/15

Y1 - 2022/9/15

N2 - Atomically dispersed iron-nitrogen-carbon catalysts offer great potential in oxygen reduction reaction (ORR), yet the poor exposure and low density of Fe-Nx sites causes relatively low ORR activity. Herein, a zinc-assisted MgO template strategy is reported to construct porous carbon-supported Fe-N4 sites (Fe-N-C). Iron atoms surrounded by zinc species are converted to abundant Fe-N4 sites rather than Fe containing nanoparticles. Meanwhile, both the zinc species and the MgO template can effectively produce porous structure so as to increase the utilization of Fe-N4 sites. Fe-N-C achieves superior ORR performance and stability in alkaline medium. Theoretical calculations manifest that Fe-N4 sites can narrow the energy barrier for ORR. Moreover, finite element simulation exhibits the porous framework in Fe-N-C could significantly accelerate the diffusion of O2. Therefore, Fe-N-C provides a high peak power density and superior discharge ability toward Zn-air batteries.

AB - Atomically dispersed iron-nitrogen-carbon catalysts offer great potential in oxygen reduction reaction (ORR), yet the poor exposure and low density of Fe-Nx sites causes relatively low ORR activity. Herein, a zinc-assisted MgO template strategy is reported to construct porous carbon-supported Fe-N4 sites (Fe-N-C). Iron atoms surrounded by zinc species are converted to abundant Fe-N4 sites rather than Fe containing nanoparticles. Meanwhile, both the zinc species and the MgO template can effectively produce porous structure so as to increase the utilization of Fe-N4 sites. Fe-N-C achieves superior ORR performance and stability in alkaline medium. Theoretical calculations manifest that Fe-N4 sites can narrow the energy barrier for ORR. Moreover, finite element simulation exhibits the porous framework in Fe-N-C could significantly accelerate the diffusion of O2. Therefore, Fe-N-C provides a high peak power density and superior discharge ability toward Zn-air batteries.

KW - Atomically dispersed catalysts

KW - Fe-N sites

KW - Oxygen reduction

KW - Porous structure

KW - Zn-air batteries

UR - https://www.scopus.com/pages/publications/85129027317

U2 - 10.1016/j.apcatb.2022.121454

DO - 10.1016/j.apcatb.2022.121454

M3 - 文章

AN - SCOPUS:85129027317

SN - 0926-3373

VL - 313

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

M1 - 121454

ER -

Zinc-assisted MgO template synthesis of porous carbon-supported Fe-N_x sites for efficient oxygen reduction reaction catalysis in Zn-air batteries

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Keywords

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