Improved ORR Performance of Precious Metal‐Free Fe Single‐Atom Catalysts by Heteroatom Doping
Abstract The development of platinum group metal (PGM)‐free catalysts is essential to advance the wide application of fuel cells. Single‐atom Fe─N─C catalysts are one type of promising PGM‐free catalysts that can replace the expensive Pt/C catalyst for the electrocatalytic oxygen reduction reaction....
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-07-01
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| Series: | Advanced Materials Interfaces |
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| Online Access: | https://doi.org/10.1002/admi.202500253 |
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| author | Zhexin Pan Yiming Zhu Yihong Liu Wei‐Hsiang Huang Yujie Cui Yang Zhao Menghao Yang Hongfei Cheng Nicolas Alonso‐Vante Jiwei Ma |
| author_facet | Zhexin Pan Yiming Zhu Yihong Liu Wei‐Hsiang Huang Yujie Cui Yang Zhao Menghao Yang Hongfei Cheng Nicolas Alonso‐Vante Jiwei Ma |
| author_sort | Zhexin Pan |
| collection | DOAJ |
| description | Abstract The development of platinum group metal (PGM)‐free catalysts is essential to advance the wide application of fuel cells. Single‐atom Fe─N─C catalysts are one type of promising PGM‐free catalysts that can replace the expensive Pt/C catalyst for the electrocatalytic oxygen reduction reaction. However, Fe─N─C catalysts still suffer from poor stability due to the inevitable Fenton reaction. In this work, a doping strategy is demonstrated to alter the electronic structure around the catalytic sites and significantly improve their catalytic activity. In particular, the phosphorous‐doped Fe─N─C catalyst (P─Fe─N─C) achieves a half‐wave potential of 0.885 V versus RHE in 0.1 m KOH and demonstrates excellent stability, with only a 7 mV decay in the half‐wave potential after 10 000 cyclic voltammetry cycles, superior to that of boron‐doped one (B─Fe─N─C). Density functional theory (DFT) calculations further confirm that heteroatom doping favors the ORR process, highlighting the potential of this catalyst for advanced energy applications. |
| format | Article |
| id | doaj-art-ed4442e971d64ef5be112fb03c05c0ab |
| institution | Kabale University |
| issn | 2196-7350 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj-art-ed4442e971d64ef5be112fb03c05c0ab2025-08-20T03:51:08ZengWiley-VCHAdvanced Materials Interfaces2196-73502025-07-011213n/an/a10.1002/admi.202500253Improved ORR Performance of Precious Metal‐Free Fe Single‐Atom Catalysts by Heteroatom DopingZhexin Pan0Yiming Zhu1Yihong Liu2Wei‐Hsiang Huang3Yujie Cui4Yang Zhao5Menghao Yang6Hongfei Cheng7Nicolas Alonso‐Vante8Jiwei Ma9Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai 201804 P. R. ChinaShanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai 201804 P. R. ChinaShanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai 201804 P. R. ChinaNational Synchrotron Radiation Research Center Hsinchu 300092 TaiwanShanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai 201804 P. R. ChinaDalian National Laboratory for Clean Energy (DNL) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 P. R. ChinaShanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai 201804 P. R. ChinaShanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai 201804 P. R. ChinaCollege of Smart Energy Shanghai Jiao Tong University Shanghai 200241 P. R. ChinaShanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for Vehicles School of Materials Science and Engineering Tongji University Shanghai 201804 P. R. ChinaAbstract The development of platinum group metal (PGM)‐free catalysts is essential to advance the wide application of fuel cells. Single‐atom Fe─N─C catalysts are one type of promising PGM‐free catalysts that can replace the expensive Pt/C catalyst for the electrocatalytic oxygen reduction reaction. However, Fe─N─C catalysts still suffer from poor stability due to the inevitable Fenton reaction. In this work, a doping strategy is demonstrated to alter the electronic structure around the catalytic sites and significantly improve their catalytic activity. In particular, the phosphorous‐doped Fe─N─C catalyst (P─Fe─N─C) achieves a half‐wave potential of 0.885 V versus RHE in 0.1 m KOH and demonstrates excellent stability, with only a 7 mV decay in the half‐wave potential after 10 000 cyclic voltammetry cycles, superior to that of boron‐doped one (B─Fe─N─C). Density functional theory (DFT) calculations further confirm that heteroatom doping favors the ORR process, highlighting the potential of this catalyst for advanced energy applications.https://doi.org/10.1002/admi.202500253Fe single‐atom catalystfuel cellheteroatom dopingoxygen reduction reactionPGM free |
| spellingShingle | Zhexin Pan Yiming Zhu Yihong Liu Wei‐Hsiang Huang Yujie Cui Yang Zhao Menghao Yang Hongfei Cheng Nicolas Alonso‐Vante Jiwei Ma Improved ORR Performance of Precious Metal‐Free Fe Single‐Atom Catalysts by Heteroatom Doping Advanced Materials Interfaces Fe single‐atom catalyst fuel cell heteroatom doping oxygen reduction reaction PGM free |
| title | Improved ORR Performance of Precious Metal‐Free Fe Single‐Atom Catalysts by Heteroatom Doping |
| title_full | Improved ORR Performance of Precious Metal‐Free Fe Single‐Atom Catalysts by Heteroatom Doping |
| title_fullStr | Improved ORR Performance of Precious Metal‐Free Fe Single‐Atom Catalysts by Heteroatom Doping |
| title_full_unstemmed | Improved ORR Performance of Precious Metal‐Free Fe Single‐Atom Catalysts by Heteroatom Doping |
| title_short | Improved ORR Performance of Precious Metal‐Free Fe Single‐Atom Catalysts by Heteroatom Doping |
| title_sort | improved orr performance of precious metal free fe single atom catalysts by heteroatom doping |
| topic | Fe single‐atom catalyst fuel cell heteroatom doping oxygen reduction reaction PGM free |
| url | https://doi.org/10.1002/admi.202500253 |
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