Pt/Pd Single-Atom Alloys as Highly Active Electrochemical Catalysts and the Origin of Enhanced Activity
Abstract
Pt single-atom catalysts are receiving more and more attention due to their different properties compared with nanostructures. As one typical kind of single-atom catalysts, Pt-based single-atom alloys (SAAs) have generated significant interest due to their application in several heterogeneous catalytic reactions. However, almost all of the reported Pt-based SAAs are on Cu surface. In addition, it is still great challenge to apply Pt single-atom alloys in electrocatalytic reactions. Herein, we demonstrated a fabrication of Pt/Pd SAA catalysts on nitrogen-doped carbon nanotubes by atomic layer deposition. The as-prepared octahedral Pt/Pd SAA catalysts exhibited greatly improved activity compared to commercial Pt/C catalysts for electrochemical catalytic reactions. According to the X-ray adsorption spectrum, the Pt atoms in Pt/Pd SAA catalysts exhibited higher unoccupied 5d character density of states and a lower Pt–Pt coordination number, compared to those in core–shell structures. In addition, we used density functional theory calculation results to explain the enhanced mechanism of Pt/Pd SAA catalysts for electrochemical reactions. This study opens up an avenue of developing different types of Pt-based catalysts for electrocatalytic reactions and brings insight understanding about catalytic performances of SAA catalysts.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Alloying Pt with other metal(s) is the most widely employed strategy for catalyst design.
“The alloying of Pt with other metal(s) is the most widely employed strategy for catalyst design [34].”
From Recent Advances on PEM Fuel Cells: From Key Materials to Membrane Electrode Assembly (2023) · cites this paper as [34]
Cites
Tian, N., Zhou, Z.-Y., Sun, S.-G., Ding, Y., & Wang, Z. L. (2007) · Science · doi:10.1126/science.1140484 · Cited by 3,073 · see citing works
Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces
Chen, C., Kang, Y., Huo, Z., Zhu, Z., Huang, W., Xin, H. L., Snyder, J. D., Li, D., Herron, J. A., Mavrikakis, M., et al. (2014) · Science · doi:10.1126/science.1249061 · Cited by 2,765 · see citing works
Platinum single-atom and cluster catalysis of the hydrogen evolution reaction
Cheng, N., Stambula, S., Wang, D., Banis, M. N., Liu, J., Riese, A., Xiao, B., Li, R., Sham, T.-K., Liu, L.-M., et al. (2016) · Nature Communications · doi:10.1038/ncomms13638 · Cited by 2,072 · see citing works
Self-citationShao, M., Peles, A., & Shoemaker, K. (2011) · Nano Letters · doi:10.1021/nl2017459 · Cited by 878 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Recent Advances on PEM Fuel Cells: From Key Materials to Membrane Electrode Assembly
Mo, S., Du, L., Huang, Z., Chen, J., Zhou, Y., Wu, P., Meng, L., Wang, N., Xing, L., Zhao, M., et al. (2023) · Electrochemical Energy Reviews · doi:10.1007/s41918-023-00190-w · Cited by 277 · see citing works
“The alloying of Pt with other metal(s) is the most widely employed strategy for catalyst design [34].”
Self-citationCai, C., Liu, K., Zhu, Y., Li, P., Wang, Q., Liu, B., Chen, S., Li, H., Zhu, L., Li, H., et al. (2022) · Angewandte Chemie International Edition · doi:10.1002/anie.202113664 · Cited by 213 · see citing works
- Authors
- Zhang, L., Liu, H., Liu, S., Norouzi Banis, M., Song, Z., Li, J., Yang, L., Markiewicz, M., Zhao, Y., Li, R., Zheng, M., Ye, S., Zhao, Z.-J., Botton, G. A., & Sun, X.
- Affiliations
- Western University (CA)
- McMaster University (CA)
- Tianjin University (CN)
- Department of Mechanical and Materials Engineering, The University of Western Ontario, London, ON N6A 5B9, Canada
- Ballard Power Systems (Canada) (CA)
- Corresponding author
- Zhao, Zhi-Jian
- Botton, Gianluigi A.
- Sun, Xueliang
- ORCID
- Venue
- ACS Catalysis
- Publisher
- American Chemical Society (ACS)
- Published
- 2019-09-05
- Volume
- 9
- Issue
- 10
- Pages
- 9350-9358
- ISSN
- 2155-5435 (ISSN-L)
- OpenAlex
- W2971660397
- Cited by
- 156
- References
- 4
- Citations by year
- 2026: 12 · 2025: 24 · 2024: 19 · 2023: 26 · 2022: 25 · 2021: 33 · 2020: 17
- FWCI
- 3.99
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- ACS Catalysis (publishedVersion)
- Funders
- Canada Foundation for Innovation
- Western University
- Canada Research Chairs
- Natural Sciences and Engineering Research Council of Canada
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Electrochemical sensors and biosensors
- Keywords
- single-atom catalysts, electrocatalysis, nitrogen-doped carbon nanotubes, atomic layer deposition, core-shell catalysts, hydrogen evolution reaction, oxygen reduction reaction, catalytic activity enhancement
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
