Gold–Copper Aerogels with Intriguing Surface Electronic Modulation as Highly Active and Stable Electrocatalysts for Oxygen Reduction and Borohydride Oxidation
Open accessAbstract
We, for the first time, report the successful synthesis of self‐assembled AuCu aerogels by a one‐pot kinetically controlled approach. A startling electronic modulation effect of Cu on Au was observed across the entire alloy composition range, for which the optimal upshift of the d‐band center for the highest activities was 0.24 eV. Owing to the combination of a nanoporous architecture and a robust electronic effect, the Au 52 Cu 48 aerogels exhibited better catalytic performance for the oxygen reduction reaction (ORR) and the direct borohydride oxidation reaction (BOR) than commercial Pt/C catalysts. The specific and mass ORR activities were 4.5 and 6.3 times higher, respectively, on the Au 52 Cu 48 aerogels than on Pt/C with negligible activity decay even after 10 000 cycles and a duration of 40 000 s. For the BOR, the Au 52 Cu 48 aerogels also exhibited far better selectivity and activity than Pt/C. The new AuCu aerogels show great potential as a promising alternative for Pt‐based catalysts in fuel cells.
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Almost all previously reported metallic aerogels were restricted to three-dimensional (3D) nanostructures.
“So far, various noble metal aerogels have been synthesized, yet almost all the previously reported metallic aerogels were restricted to the three dimensional (3D) nanostructures [41–43], which significantly slows down the development of high-performance metallic aerogels because of the same structures.”
From Lamellar platinum–rhodium aerogels with superior electrocatalytic performance for both hydrogen oxidation and evolution reaction in alkaline environment (2019) · cites this paper as [41]
The available indexed passages identify the AuCu aerogel article but do not discuss the structures of previously reported metallic aerogels. Searches for “three-dimensional,” “3D,” and “metallic aerogels” found no passage supporting or contradicting the claim. (LLM, conf=0.72)
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Self-citationElement Distributions in Bimetallic Aerogels
Wang, C., Herranz, J., Hübner, R., Schmidt, T. J., & Eychmüller, A. (2023) · Accounts of Chemical Research · doi:10.1021/acs.accounts.2c00491 · Cited by 42 · see citing works
- Authors
- Wang, J., Chen, F., Jin, Y., & Johnston, R. L.
- Affiliations
- Northwestern Polytechnical University (CN)
- University of Birmingham (GB)
- Corresponding author
- Chen, Fuyi
- Venue
- ChemSusChem
- Publisher
- Wiley
- Published
- 2018-03-23
- Volume
- 11
- Issue
- 8
- Pages
- 1354-1364
- ISSN
- 1864-5631 (ISSN-L)
- 1864-564X
- OpenAlex
- W2794379705
- Cited by
- 40
- References
- 0
- Citations by year
- 2026: 2 · 2025: 4 · 2024: 1 · 2023: 8 · 2022: 7 · 2021: 6 · 2020: 4 · 2019: 8
- FWCI
- 1.04
- Type
- journal article
- Language
- en
- Open access
- Licence
- Locations
- ChemSusChem (publishedVersion)
- PubMed (publishedVersion)
- University of Birmingham Research Portal (University of Birmingham) (submittedVersion, other-oa)
- Funders
- the National Natural Science Foundation of China (51271148, 50971100)
- the Research Fund of State Key Laboratory of Solidification Processing in China (150-ZH-2016)
- the Aeronautic Science Foundation Program of China (2012ZF53073)
- the Project of Transformation of Scientific and Technological Achievements of NWPU (19-2017)
- the Doctoral Fund of Ministry of Education of China (20136102110013)
- the Open Fund of State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (2018-KF-18)
- 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 › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
- Keywords
- gold-copper alloys, oxygen reduction reaction, borohydride oxidation, electrocatalysts, d-band center, electronic modulation, self-assembly, catalyst stability, platinum-free catalysts, fuel cells
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