Bimetallic Aerogels: High‐Performance Electrocatalysts for the Oxygen Reduction Reaction
Abstract
Best of both worlds: PtxPdy, Pt, and Pd aerogels with high surface area and porosity can be synthesized in a controlled fashion by a straightforward and environmentally benign strategy. These materials, which are highly active and stable catalysts for the oxygen reduction reaction in PEFC cathodes, combine the high stability of extended surfaces with the high surface area of nanoparticles.
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The one-step method for preparing NMAs usually requires a longer cycle to settle the gel (up to several days at room temperature).
“it usually requires a longer cycle to settle the gel (up to several days at room temperature).”
From Ultrafast Generation of Nanostructured Noble Metal Aerogels by a Microwave Method for Electrocatalytic Hydrogen Evolution and Ethanol Oxidation (2021) · cites this paper as [30]
The preparation process of NMAs is costly and time-consuming, requiring a high concentration of precursors, a complicated procedure, and yielding uneven size of ligaments.
“the preparation process of NMAs is costly and time-consuming, in addition to requirement of high concentration of precursors, complicated procedure, and uneven size of ligaments of NMAs.”
From Ultrafast Generation of Nanostructured Noble Metal Aerogels by a Microwave Method for Electrocatalytic Hydrogen Evolution and Ethanol Oxidation (2021) · cites this paper as [30]
Such monolith aerogel architecture is similar to that of previously reported 3D metallic aerogels and nanofoams synthesized by using the NaBH4 reduction method with relatively high precursor concentrations, which usually has long diffusion pathways and low noble metal utilization efficiency, unfavorable to greatly improve the electrocatalytic performance.
“Such monolith aerogel architecture is similar to that of previously reported 3D metallic aerogels and nanofoams synthesized by using the NaBH4 reduction method with a relatively high precursor concentrations, which usually has long diffusion pathways and low noble metal utilization efficiency, unfavorable to greatly improve the electrocatalytic performance.”
From Lamellar platinum–rhodium aerogels with superior electrocatalytic performance for both hydrogen oxidation and evolution reaction in alkaline environment (2019) · cites this paper as [66]
A highly porous interconnected network was observed in Co2Ni/5rGO.
“A highly porous interconnected network was observed in Fig. 3(a), which agrees to those metal aerogels prepared by the similar method [24, 32, 35].”
From Synthesis of Co2Ni/reduced graphene oxide composite aerogels as efficient hydrogen evolution catalysts (2022) · cites this paper as [24]
Many noble-metal-based catalysts are supported on carbon black, inevitably resulting in reduced durability due to corrosion of the carbon support.
“many noble-metal-based catalysts are supported on carbon black, inevitably resulting in a reduced durability due to the corrosion of the carbon support.[16]”
From Engineering Multimetallic Aerogels for pH‐Universal HER and ORR Electrocatalysis (2020) · cites this paper as [16]
Only the Pd-Pt, Pt-Ni, and PdxAu-Pt core-shell aerogels have been reported to date.
“only the Pd–Pt, Pt–Ni, and PdxAu-Pt core–shell aerogels have been reported to date.[15,16,40]”
From Engineering Multimetallic Aerogels for pH‐Universal HER and ORR Electrocatalysis (2020) · cites this paper as [16]
The lower stability of Pt/C might be attributed to the delamination of supported carbon during operation, while the self-supported Au-Pt aerogel does not have such issues.
“The lower stability of Pt/C might be attributed to the delamination of supported carbon during operation, while the self-supported Au–Pt aerogel does not have such issues, as reported for the Pt–Pd and in Pt–Ni aerogels.[15,16]”
From Engineering Multimetallic Aerogels for pH‐Universal HER and ORR Electrocatalysis (2020) · cites this paper as [16]
Pt-aerogel and Pt-based bi-metallic aerogels were reported for ORR.
“For example synthesis of Pt-aerogel and Pt based bi-metallic was reported for ORR31.”
From Gold aerogel supported on graphitic carbon nitride: an efficient electrocatalyst for oxygen reduction reaction and hydrogen evolution reaction (2015) · cites this paper as [31]
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References 40 · Cited by 277
- Authors
- Liu, W., Rodriguez, P., Borchardt, L., Foelske, A., Yuan, J., Herrmann, A., Geiger, D., Zheng, Z., Kaskel, S., Gaponik, N., Kötz, R., Schmidt, T. J., & Eychmüller, A.
- Affiliations
- Technische Universität Dresden (DE)
- Paul Scherrer Institute (CH)
- Universität Ulm (DE)
- ETH Zurich (CH)
- Corresponding author
- Schmidt, Thomas J.
- Eychmüller, Alexander
- ORCID
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2013-07-22
- Volume
- 52
- Issue
- 37
- Pages
- 9849-9852
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2020240406
- Cited by
- 277
- References
- 40
- Citations by year
- 2026: 5 · 2025: 15 · 2024: 9 · 2023: 17 · 2022: 22 · 2021: 21 · 2020: 33 · 2019: 26 · 2018: 25 · 2017: 33 · 2016: 27 · 2015: 29 · 2014: 14 · 2013: 1
- FWCI
- 8.59
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Angewandte Chemie International Edition (publishedVersion)
- PubMed (publishedVersion)
- DORA PSI (Paul Scherrer Institute) (submittedVersion)
- University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Fuel Cells and Related Materials
- Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
- Keywords
- PtPd alloy, platinum, palladium, oxygen reduction reaction, electrocatalysts, proton exchange membrane fuel cells, fuel cell cathode, high surface area, nanoparticle stability, green synthesis
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