Epitaxial growth of Pd clusters on N-doped Ag nanowires for oxygen reduction reaction
Efficient and stable Pt-free electrocatalysts for oxygen reduction reaction (ORR) are indispensable for future fuel cells. Herein, we describe a heterostructure of Pd nanocrystals (PdNCs) on N-doped Ag nanowires (NWs) synthesized using a direct epitaxial growth strategy with a Pd loading of only 9.5...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-01-01
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| Series: | ChemPhysMater |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772571524000275 |
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| author | Qinhe Guan Shiwei Sun Xiaohang Ge Fan Zhang Lijie Qu Chao Yin Weiyong Yuan Lianying Zhang |
| author_facet | Qinhe Guan Shiwei Sun Xiaohang Ge Fan Zhang Lijie Qu Chao Yin Weiyong Yuan Lianying Zhang |
| author_sort | Qinhe Guan |
| collection | DOAJ |
| description | Efficient and stable Pt-free electrocatalysts for oxygen reduction reaction (ORR) are indispensable for future fuel cells. Herein, we describe a heterostructure of Pd nanocrystals (PdNCs) on N-doped Ag nanowires (NWs) synthesized using a direct epitaxial growth strategy with a Pd loading of only 9.5 wt.%. The PdAg bimetallic heterostructure showed the highest mass activity among reported PdAg-based ORR electrocatalysts and exhibited excellent stability, with only a 1.5 mV decay in the half-wave potential even after 20000 cycles of continuous testing. The remarkably enhanced activity and durability can be attributed to the distinct advantages of the ultrasmall PdNCs, cocatalysts of N-doped AgNWs, and their heterointerfaces. This work reveals that the epitaxial growth of a heterostructure on a stable support is a promising strategy for promoting catalytic performance. |
| format | Article |
| id | doaj-art-39b25dd3849845adaafc62d3e4e85e09 |
| institution | Kabale University |
| issn | 2772-5715 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | ChemPhysMater |
| spelling | doaj-art-39b25dd3849845adaafc62d3e4e85e092025-01-22T05:44:25ZengKeAi Communications Co., Ltd.ChemPhysMater2772-57152025-01-01417177Epitaxial growth of Pd clusters on N-doped Ag nanowires for oxygen reduction reactionQinhe Guan0Shiwei Sun1Xiaohang Ge2Fan Zhang3Lijie Qu4Chao Yin5Weiyong Yuan6Lianying Zhang7Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, ChinaInstitute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, ChinaInstitute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, ChinaInstitute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, ChinaInstitute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, ChinaInstitute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, ChinaNingbo Innovation Centre, Zhejiang University, Ningbo 315100, China; College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China; Corresponding authors.Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China; Corresponding authors.Efficient and stable Pt-free electrocatalysts for oxygen reduction reaction (ORR) are indispensable for future fuel cells. Herein, we describe a heterostructure of Pd nanocrystals (PdNCs) on N-doped Ag nanowires (NWs) synthesized using a direct epitaxial growth strategy with a Pd loading of only 9.5 wt.%. The PdAg bimetallic heterostructure showed the highest mass activity among reported PdAg-based ORR electrocatalysts and exhibited excellent stability, with only a 1.5 mV decay in the half-wave potential even after 20000 cycles of continuous testing. The remarkably enhanced activity and durability can be attributed to the distinct advantages of the ultrasmall PdNCs, cocatalysts of N-doped AgNWs, and their heterointerfaces. This work reveals that the epitaxial growth of a heterostructure on a stable support is a promising strategy for promoting catalytic performance.http://www.sciencedirect.com/science/article/pii/S2772571524000275N dopingEpitaxial growthPdAg heterostructureAg nanowiresOxygen reduction |
| spellingShingle | Qinhe Guan Shiwei Sun Xiaohang Ge Fan Zhang Lijie Qu Chao Yin Weiyong Yuan Lianying Zhang Epitaxial growth of Pd clusters on N-doped Ag nanowires for oxygen reduction reaction ChemPhysMater N doping Epitaxial growth PdAg heterostructure Ag nanowires Oxygen reduction |
| title | Epitaxial growth of Pd clusters on N-doped Ag nanowires for oxygen reduction reaction |
| title_full | Epitaxial growth of Pd clusters on N-doped Ag nanowires for oxygen reduction reaction |
| title_fullStr | Epitaxial growth of Pd clusters on N-doped Ag nanowires for oxygen reduction reaction |
| title_full_unstemmed | Epitaxial growth of Pd clusters on N-doped Ag nanowires for oxygen reduction reaction |
| title_short | Epitaxial growth of Pd clusters on N-doped Ag nanowires for oxygen reduction reaction |
| title_sort | epitaxial growth of pd clusters on n doped ag nanowires for oxygen reduction reaction |
| topic | N doping Epitaxial growth PdAg heterostructure Ag nanowires Oxygen reduction |
| url | http://www.sciencedirect.com/science/article/pii/S2772571524000275 |
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