Janus effect of FeCo dual atom catalyst with Co as active center in acidic oxygen reduction reaction
Abstract Dual-atom catalysts (DACs) represent a frontier in heterogeneous electrocatalysis for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. However, the dynamic evolution of active-site structure complicates mechanistic understanding. Herein, alloyed Fe-Co DACs with st...
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Nature Portfolio
2025-08-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-62728-4 |
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| author | Long-Ji Yuan Zhen-Yu Miao Xu-Lei Sui Chi-Feng Lee Qi Li Mei-Jie Yin Li-Xiao Shen Ying-Rui Lu Zi-Gang Zhao Yu-Zhe Liu Lin-Sheng Zhu Wei Gong Wen-Liang Feng Hsiao-Tsu Wang Guo-Xu Zhang Zhen-Bo Wang |
| author_facet | Long-Ji Yuan Zhen-Yu Miao Xu-Lei Sui Chi-Feng Lee Qi Li Mei-Jie Yin Li-Xiao Shen Ying-Rui Lu Zi-Gang Zhao Yu-Zhe Liu Lin-Sheng Zhu Wei Gong Wen-Liang Feng Hsiao-Tsu Wang Guo-Xu Zhang Zhen-Bo Wang |
| author_sort | Long-Ji Yuan |
| collection | DOAJ |
| description | Abstract Dual-atom catalysts (DACs) represent a frontier in heterogeneous electrocatalysis for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. However, the dynamic evolution of active-site structure complicates mechanistic understanding. Herein, alloyed Fe-Co DACs with strong Fe-Co bonds are synthesized via molecular chelation and ionic coupling strategies. In-situ spectroscopy combined with theoretical calculation reveals the Janus effect of Fe-Co dual-atom sites: Co serves as the primary catalytic center for the 4e- process with Fe as the cooperative sites to absorb the *OH. This division-of-labor mechanism lowers the theoretical overpotential from 1.14 V to 0.43 V for acidic oxygen reduction reaction. Thus, the catalyst achieves a 0.852 V half-wave potential and 1.14 W cm−2 power density (2.0 bar H₂-O₂), sustaining 81% peak power after 10,000 cycles. These findings clarify DAC configuration-mechanism relationships, guiding the design of high-performance DACs. |
| format | Article |
| id | doaj-art-97b95640ccc340b5b4aaa73b8a1f1c53 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-97b95640ccc340b5b4aaa73b8a1f1c532025-08-20T04:02:54ZengNature PortfolioNature Communications2041-17232025-08-0116111410.1038/s41467-025-62728-4Janus effect of FeCo dual atom catalyst with Co as active center in acidic oxygen reduction reactionLong-Ji Yuan0Zhen-Yu Miao1Xu-Lei Sui2Chi-Feng Lee3Qi Li4Mei-Jie Yin5Li-Xiao Shen6Ying-Rui Lu7Zi-Gang Zhao8Yu-Zhe Liu9Lin-Sheng Zhu10Wei Gong11Wen-Liang Feng12Hsiao-Tsu Wang13Guo-Xu Zhang14Zhen-Bo Wang15College of Materials Science and Engineering, Shenzhen UniversitySchool of Chemistry and Chemical Engineering, Harbin Institute of TechnologyCollege of Materials Science and Engineering, Shenzhen UniversityBachelor’s Program in Advanced Materials Science, Tamkang UniversityCollege of Materials Science and Engineering, Shenzhen UniversityCollege of Materials Science and Engineering, Shenzhen UniversityCollege of Materials Science and Engineering, Shenzhen UniversityNational Synchrotron Radiation Research Center, Hsinchu Science ParkSchool of Chemistry and Chemical Engineering, Harbin Institute of TechnologyCollege of Materials Science and Engineering, Shenzhen UniversityCollege of Materials Science and Engineering, Shenzhen UniversityCollege of Materials Science and Engineering, Shenzhen UniversityCollege of Materials Science and Engineering, Shenzhen UniversityBachelor’s Program in Advanced Materials Science, Tamkang UniversitySchool of Chemistry and Chemical Engineering, Harbin Institute of TechnologyCollege of Materials Science and Engineering, Shenzhen UniversityAbstract Dual-atom catalysts (DACs) represent a frontier in heterogeneous electrocatalysis for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. However, the dynamic evolution of active-site structure complicates mechanistic understanding. Herein, alloyed Fe-Co DACs with strong Fe-Co bonds are synthesized via molecular chelation and ionic coupling strategies. In-situ spectroscopy combined with theoretical calculation reveals the Janus effect of Fe-Co dual-atom sites: Co serves as the primary catalytic center for the 4e- process with Fe as the cooperative sites to absorb the *OH. This division-of-labor mechanism lowers the theoretical overpotential from 1.14 V to 0.43 V for acidic oxygen reduction reaction. Thus, the catalyst achieves a 0.852 V half-wave potential and 1.14 W cm−2 power density (2.0 bar H₂-O₂), sustaining 81% peak power after 10,000 cycles. These findings clarify DAC configuration-mechanism relationships, guiding the design of high-performance DACs.https://doi.org/10.1038/s41467-025-62728-4 |
| spellingShingle | Long-Ji Yuan Zhen-Yu Miao Xu-Lei Sui Chi-Feng Lee Qi Li Mei-Jie Yin Li-Xiao Shen Ying-Rui Lu Zi-Gang Zhao Yu-Zhe Liu Lin-Sheng Zhu Wei Gong Wen-Liang Feng Hsiao-Tsu Wang Guo-Xu Zhang Zhen-Bo Wang Janus effect of FeCo dual atom catalyst with Co as active center in acidic oxygen reduction reaction Nature Communications |
| title | Janus effect of FeCo dual atom catalyst with Co as active center in acidic oxygen reduction reaction |
| title_full | Janus effect of FeCo dual atom catalyst with Co as active center in acidic oxygen reduction reaction |
| title_fullStr | Janus effect of FeCo dual atom catalyst with Co as active center in acidic oxygen reduction reaction |
| title_full_unstemmed | Janus effect of FeCo dual atom catalyst with Co as active center in acidic oxygen reduction reaction |
| title_short | Janus effect of FeCo dual atom catalyst with Co as active center in acidic oxygen reduction reaction |
| title_sort | janus effect of feco dual atom catalyst with co as active center in acidic oxygen reduction reaction |
| url | https://doi.org/10.1038/s41467-025-62728-4 |
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