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Enhancing Oxygen Reduction Reaction Activity via Pd−Au Alloy Sublayer Mediation of Pt Monolayer Electrocatalysts
Abstract
New Pt monolayer electrocatalysts were prepared using galvanic displacement of a copper monolayer deposited at underpotentials on a Pd core. By performing underpotential deposition twice, two monolayers were deposited, forming a core−shell structure with double shells. The double shells consist of an outermost shell of Pt monolayer and a sublayer shell of Pd−Au alloy. It was found that by adjusting the compositions of the alloy sublayer, it is possible to mediate the oxygen reduction reaction (ORR) activity of the Pt catalysts. An alloy with 10% (atomic) Au was found to be the most active among the catalysts tested. Furthermore, the catalysts showed good cycling stability that may be due to stabilizing effect of Au. Since different alloys can be used as the sublayer for mediation, this work may open up various opportunities to tailor electrocatalysts for best ORR activity.
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Stabilization of Platinum Oxygen-Reduction Electrocatalysts Using Gold Clusters
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Self-citationAdsorption and Dissociation of O 2 on Pt−Co and Pt−Fe Alloys
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Metal monolayer deposition by replacement of metal adlayers on electrode surfaces
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Self-citationImproved oxygen reduction reactivity of platinum monolayers on transition metal surfaces
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Bimetallic and Ternary Alloys for Improved Oxygen Reduction Catalysis
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Electrocatalyst approaches and challenges for automotive fuel cells
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Recent Advances in Electrocatalysts for Oxygen Reduction Reaction
Shao, M., Chang, Q., Dodelet, J.-P., & Chenitz, R. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.5b00462 · Cited by 3,903
Recent progress of high-entropy materials for energy storage and conversion
Amiri, A., & Shahbazian-Yassar, R. (2021) · Journal of Materials Chemistry A · doi:10.1039/d0ta09578h · Cited by 592
Electrochemical Methods of Real Surface Area Determination of Noble Metal Electrodes – an Overview
Łukaszewski, M., Soszko, M., & Czerwiński, A. (2016) · International Journal of Electrochemical Science · doi:10.20964/2016.06.71 · Cited by 476
Pt-Based Core–Shell Catalyst Architectures for Oxygen Fuel Cell Electrodes
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Metadata
- Authors
- Xing, Y., Cai, Y., Vukmirovic, M. B., Zhou, W.-P., Karan, H., Wang, J. X., & Adzic, R. R.
- Venue
- The Journal of Physical Chemistry Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-10-26
- Volume
- 1
- Issue
- 21
- Pages
- 3238-3242
- ISSN
- 1948-7185 (ISSN-L)
- OpenAlex
- W1981876461
- Cited by
- 159
- References
- 8
- FWCI
- 8.30
- Type
- journal article
- Language
- en
- Open access
- closed
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- Xing, Y., Cai, Y., Vukmirovic, M. B., Zhou, W.-P., Karan, H., Wang, J. X., & Adzic, R. R. (2010). Enhancing Oxygen Reduction Reaction Activity via Pd−Au Alloy Sublayer Mediation of Pt Monolayer Electrocatalysts. The Journal of Physical Chemistry Letters. https://doi.org/10.1021/jz101297r
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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