Undercoordinated Two-Dimensional Pt Nanoring Stabilized by a Ring-on-Sheet Nanoheterostructure for Highly Efficient Alkaline Hydrogen Evolution Reaction
Platinum (Pt) is a state-of-the-art electrocatalyst for green hydrogen production in alkaline electrolytes. The delicate design and fabrication of two-dimensional (2D) Pt nanocatalysts can significantly enhance atomic utilization efficiency, while further improving intrinsic catalytic performance by modulating the density of surface active sites. However, the high surface energy and morphology complexity of 2D nanostructures often result in poor structural stability under the working conditions. Here, we report the synthesis of a 2D ring-on-sheet nanoheterostructure featuring abundant low-coordination Pt sites in which a defect-rich Pt nanoring is stabilized by an ultrathin 2D rhodium (Rh) support. The Rh@Pt nanoring exhibits remarkably enhanced activity and stability in an electrocatalytic hydrogen evolution reaction in alkaline media compared to defect-free Rh@Pt core-shell nanoplates and commercial Pt/C. This work provides new insights for the design and synthesis of 2D nanoheterostructures with abundant surface active sites for efficient and durable electrocatalysis.
Authors
- Zhiyuan Zeng (ORCID: https://orcid.org/0000-0001-7483-1438)
- Long Zheng (ORCID: https://orcid.org/0000-0002-7993-2913)
- Peng Han (ORCID: https://orcid.org/0000-0002-3405-087X)
- Ye Zhu (ORCID: https://orcid.org/0000-0002-5217-493X)
- Qiyuan He (ORCID: https://orcid.org/0000-0001-9083-8285)
- Hongyan He (ORCID: https://orcid.org/0000-0003-1291-2771)
- Yanjie Wu (ORCID: https://orcid.org/0000-0002-7269-9792)
- Zhihai Ke (ORCID: https://orcid.org/0000-0001-7079-8845)
- Changsheng Chen (ORCID: https://orcid.org/0000-0001-9128-4165)
- Wenbin Wang (ORCID: https://orcid.org/0000-0001-7287-2770)
- Ye Chen (ORCID: https://orcid.org/0000-0003-0821-7469)
- Weiwei Chen (ORCID: https://orcid.org/0000-0002-4633-0721)
- Gang Wang (ORCID: https://orcid.org/0000-0002-9297-136X)
- Xiao Wang (ORCID: https://orcid.org/0000-0003-3971-4468)
- Dong Su (ORCID: https://orcid.org/0000-0002-1921-6683)
- Lei Xu (ORCID: https://orcid.org/0009-0007-8240-4541)
- Chen Ma (ORCID: https://orcid.org/0000-0003-2636-5027)
- Ping Dao Gu (ORCID: https://orcid.org/0000-0003-0079-4026)
Institutions
- Hong Kong Polytechnic University (HK)
- City University of Hong Kong (HK)
- Chinese University of Hong Kong (HK)
- Chinese Academy of Sciences (CN)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Division of Materials Science and Engineering (AU)
- Institute of Process Engineering (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Nano Letters
- Published
- 2025-02-12
- DOI
- https://doi.org/10.1021/acs.nanolett.4c05833
- Citations
- 5
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 1.82
Funders
- City University of Hong Kong
- National Natural Science Foundation of China
- Research Grants Council, University Grants Committee
- Faculty of Science, Chinese University of Hong Kong