All-round enhancement induced by oxophilic single Ru and W atoms for alkaline hydrogen oxidation of tiny Pt nanoparticles
Abstract Anion exchange membrane fuel cells (AEMFCs) are one of the ideal energy conversion devices. However, platinum (Pt), as the benchmark catalyst for the hydrogen oxidation reaction (HOR) of AEMFCs anodes, still faces issues of insufficient performance and susceptibility to CO poisoning. Here,...
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56240-y |
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| author | Wensheng Jiao Zhanghao Ren Zhibo Cui Chao Ma Ziang Shang Guanzhen Chen Ruihu Lu Tao Gan Ziyun Wang Yu Xiong Yunhu Han |
| author_facet | Wensheng Jiao Zhanghao Ren Zhibo Cui Chao Ma Ziang Shang Guanzhen Chen Ruihu Lu Tao Gan Ziyun Wang Yu Xiong Yunhu Han |
| author_sort | Wensheng Jiao |
| collection | DOAJ |
| description | Abstract Anion exchange membrane fuel cells (AEMFCs) are one of the ideal energy conversion devices. However, platinum (Pt), as the benchmark catalyst for the hydrogen oxidation reaction (HOR) of AEMFCs anodes, still faces issues of insufficient performance and susceptibility to CO poisoning. Here, we report the Joule heating-assisted synthesis of a small sized Ru1Pt single-atom alloy catalyst loaded on nitrogen-doped carbon modified with single W atoms (s-Ru1Pt@W1/NC), in which the near-range single Ru atoms on the Ru1Pt nanoparticles and the long-range single W atoms on the support simultaneously modulate the electronic structure of the active Pt-site, enhancing alkaline HOR performance of s-Ru1Pt@W1/NC. The mass activity of s-Ru1Pt@W1/NC is 7.54 A mgPt+Ru -1 and exhibits notable stability in 1000 ppm CO/H2-saturated electrolyte. Surprisingly, it can operate stably in H2-saturated electrolyte for 1000 h with only 24.60 % decay. Theoretical calculations demonstrate that the proximal single Ru atoms and the remote single W atoms synergistically optimize the electronic structure of the active Pt-site, improving the HOR activity and CO tolerance of the catalyst. |
| format | Article |
| id | doaj-art-99fb5aedf5f545ca86412ba289f7a455 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-99fb5aedf5f545ca86412ba289f7a4552025-01-26T12:41:14ZengNature PortfolioNature Communications2041-17232025-01-0116111110.1038/s41467-025-56240-yAll-round enhancement induced by oxophilic single Ru and W atoms for alkaline hydrogen oxidation of tiny Pt nanoparticlesWensheng Jiao0Zhanghao Ren1Zhibo Cui2Chao Ma3Ziang Shang4Guanzhen Chen5Ruihu Lu6Tao Gan7Ziyun Wang8Yu Xiong9Yunhu Han10Institute of Flexible Electronics (IFE), Northwestern Polytechnical UniversitySchool of Chemical Sciences, The University of AucklandInstitute of Flexible Electronics (IFE), Northwestern Polytechnical UniversityDepartment of Chemistry, Tsinghua UniversityInstitute of Flexible Electronics (IFE), Northwestern Polytechnical UniversityInstitute of Flexible Electronics (IFE), Northwestern Polytechnical UniversitySchool of Chemical Sciences, The University of AucklandShanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of SciencesSchool of Chemical Sciences, The University of AucklandChemistry and Chemical Engineering, Central South UniversityInstitute of Flexible Electronics (IFE), Northwestern Polytechnical UniversityAbstract Anion exchange membrane fuel cells (AEMFCs) are one of the ideal energy conversion devices. However, platinum (Pt), as the benchmark catalyst for the hydrogen oxidation reaction (HOR) of AEMFCs anodes, still faces issues of insufficient performance and susceptibility to CO poisoning. Here, we report the Joule heating-assisted synthesis of a small sized Ru1Pt single-atom alloy catalyst loaded on nitrogen-doped carbon modified with single W atoms (s-Ru1Pt@W1/NC), in which the near-range single Ru atoms on the Ru1Pt nanoparticles and the long-range single W atoms on the support simultaneously modulate the electronic structure of the active Pt-site, enhancing alkaline HOR performance of s-Ru1Pt@W1/NC. The mass activity of s-Ru1Pt@W1/NC is 7.54 A mgPt+Ru -1 and exhibits notable stability in 1000 ppm CO/H2-saturated electrolyte. Surprisingly, it can operate stably in H2-saturated electrolyte for 1000 h with only 24.60 % decay. Theoretical calculations demonstrate that the proximal single Ru atoms and the remote single W atoms synergistically optimize the electronic structure of the active Pt-site, improving the HOR activity and CO tolerance of the catalyst.https://doi.org/10.1038/s41467-025-56240-y |
| spellingShingle | Wensheng Jiao Zhanghao Ren Zhibo Cui Chao Ma Ziang Shang Guanzhen Chen Ruihu Lu Tao Gan Ziyun Wang Yu Xiong Yunhu Han All-round enhancement induced by oxophilic single Ru and W atoms for alkaline hydrogen oxidation of tiny Pt nanoparticles Nature Communications |
| title | All-round enhancement induced by oxophilic single Ru and W atoms for alkaline hydrogen oxidation of tiny Pt nanoparticles |
| title_full | All-round enhancement induced by oxophilic single Ru and W atoms for alkaline hydrogen oxidation of tiny Pt nanoparticles |
| title_fullStr | All-round enhancement induced by oxophilic single Ru and W atoms for alkaline hydrogen oxidation of tiny Pt nanoparticles |
| title_full_unstemmed | All-round enhancement induced by oxophilic single Ru and W atoms for alkaline hydrogen oxidation of tiny Pt nanoparticles |
| title_short | All-round enhancement induced by oxophilic single Ru and W atoms for alkaline hydrogen oxidation of tiny Pt nanoparticles |
| title_sort | all round enhancement induced by oxophilic single ru and w atoms for alkaline hydrogen oxidation of tiny pt nanoparticles |
| url | https://doi.org/10.1038/s41467-025-56240-y |
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