Designed Iron Single Atom Catalysts for Highly Efficient Oxygen Reduction Reaction in Alkaline and Acid Media
Abstract
Abstract Single atom catalysts (SACs) have attracted much attentions due to their advantages of high catalysis efficiency and excellent selectivity. However, for industrial applications, synthesis of SACs in large and practical quantities is very important. The challenge is to develop synthesis methods with controllability and scalability. Herein, a well‐characterized and scalable method is demonstrated to synthesize atomically dispersed iron atoms coordinated with nitrogen on graphene, SAFe @ NG, with high atomic loading (≈4.6 wt%) through a one‐pot pyrolysis process. The method is scalable for the fabrication of Fe SACs with high quantities. The Fe–N–G catalyst exhibits high intrinsic oxygen reduction reaction (ORR) performance, reaching half potential of 0.876 and 0.702 V in alkaline and acidic solutions, respectively, with excellent microstructure stability. Furthermore, the density functional theory (DFT) simulation confirms that the Fe atoms in coordination with four nitrogen atoms, FeN4, in graphene is the active center for the 4‐electron ORR process. This work demonstrates an efficient design pathway for single atom catalysts as highly active and stable electrocatalysts for high‐performance ORR applications.
- Authors:
-
[1]
- WA School of Mines: Minerals Energy and Chemical Engineering Curtin University Perth Western Australia 6102 Australia
- School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 China
- Australian Synchrotron Clayton Victoria 3168 Australia
- Centre for Microscopy Characterization and Analysis (CMCA) and School of Molecular Sciences The University of Western Australia Perth Western Australia 6009 Australia
- Advanced Carbon Division Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang Liaoning 110016 China
- Eyring Materials Center Arizona State University Tempe AZ 85287 USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1804167
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Advanced Materials Interfaces
- Additional Journal Information:
- Journal Name: Advanced Materials Interfaces Journal Volume: 8 Journal Issue: 8; Journal ID: ISSN 2196-7350
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Zhao, Shiyong, Zhang, Lianji, Johannessen, Bernt, Saunders, Martin, Liu, Chang, Yang, Shi‐Ze, and Jiang, San Ping. Designed Iron Single Atom Catalysts for Highly Efficient Oxygen Reduction Reaction in Alkaline and Acid Media. Germany: N. p., 2020.
Web. doi:10.1002/admi.202001788.
Zhao, Shiyong, Zhang, Lianji, Johannessen, Bernt, Saunders, Martin, Liu, Chang, Yang, Shi‐Ze, & Jiang, San Ping. Designed Iron Single Atom Catalysts for Highly Efficient Oxygen Reduction Reaction in Alkaline and Acid Media. Germany. https://doi.org/10.1002/admi.202001788
Zhao, Shiyong, Zhang, Lianji, Johannessen, Bernt, Saunders, Martin, Liu, Chang, Yang, Shi‐Ze, and Jiang, San Ping. Thu .
"Designed Iron Single Atom Catalysts for Highly Efficient Oxygen Reduction Reaction in Alkaline and Acid Media". Germany. https://doi.org/10.1002/admi.202001788.
@article{osti_1804167,
title = {Designed Iron Single Atom Catalysts for Highly Efficient Oxygen Reduction Reaction in Alkaline and Acid Media},
author = {Zhao, Shiyong and Zhang, Lianji and Johannessen, Bernt and Saunders, Martin and Liu, Chang and Yang, Shi‐Ze and Jiang, San Ping},
abstractNote = {Abstract Single atom catalysts (SACs) have attracted much attentions due to their advantages of high catalysis efficiency and excellent selectivity. However, for industrial applications, synthesis of SACs in large and practical quantities is very important. The challenge is to develop synthesis methods with controllability and scalability. Herein, a well‐characterized and scalable method is demonstrated to synthesize atomically dispersed iron atoms coordinated with nitrogen on graphene, SAFe @ NG, with high atomic loading (≈4.6 wt%) through a one‐pot pyrolysis process. The method is scalable for the fabrication of Fe SACs with high quantities. The Fe–N–G catalyst exhibits high intrinsic oxygen reduction reaction (ORR) performance, reaching half potential of 0.876 and 0.702 V in alkaline and acidic solutions, respectively, with excellent microstructure stability. Furthermore, the density functional theory (DFT) simulation confirms that the Fe atoms in coordination with four nitrogen atoms, FeN4, in graphene is the active center for the 4‐electron ORR process. This work demonstrates an efficient design pathway for single atom catalysts as highly active and stable electrocatalysts for high‐performance ORR applications.},
doi = {10.1002/admi.202001788},
journal = {Advanced Materials Interfaces},
number = 8,
volume = 8,
place = {Germany},
year = {Thu Dec 03 00:00:00 EST 2020},
month = {Thu Dec 03 00:00:00 EST 2020}
}
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