Function-led design of aerogels: self-assembly of alloyed PdNi hollow nanospheres for efficient electrocatalysis
Open accessAbstract
One plausible approach to endow aerogels with specific properties while preserving their other attributes is to fine-tune the building blocks. However, the preparation of metallic aerogels with designated properties, for example catalytically beneficial morphologies and transition-metal doping, still remains a challenge. Here, we report on the first aerogel electrocatalyst composed entirely of alloyed PdNi hollow nanospheres (HNSs) with controllable chemical composition and shell thickness. The combination of transition-metal doping, hollow building blocks, and the three-dimensional network structure make the PdNi HNS aerogels promising electrocatalysts for ethanol oxidation. The mass activity of the Pd83 Ni17 HNS aerogel is 5.6-fold higher than that of the commercial Pd/C catalyst. This work expands the exploitation of the electrocatalysis properties of aerogels through the morphology and composition control of its building blocks.
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3D metallic aerogels show great potential in electrocatalysis because of their conductive and self-supporting skeletons, abundant exposed active sites, and interconnected mass transport pathways.
“Among various”
From Phosphorus doped nickel-molybdenum aerogel for efficient overall water splitting (2021) · cites this paper as [20]
Precious metal aerogels provide high porosity for electrochemical applications.
“Precious metal aerogels provide significant advantages in terms of excellent electrical conductivity, high porosity, large number of active sites for electrochemical applications [31–34].”
From Partially oxidized ruthenium aerogel as highly active bifunctional electrocatalyst for overall water splitting in both alkaline and acidic media (2022) · cites this paper as [33]
Precious metal aerogels provide a large number of active sites for electrochemical applications.
“Precious metal aerogels provide significant advantages in terms of excellent electrical conductivity, high porosity, large number of active sites for electrochemical applications [31–34].”
From Partially oxidized ruthenium aerogel as highly active bifunctional electrocatalyst for overall water splitting in both alkaline and acidic media (2022) · cites this paper as [33]
Precious metal aerogels provide excellent electrical conductivity for electrochemical applications.
“Precious metal aerogels provide significant advantages in terms of excellent electrical conductivity, high porosity, large number of active sites for electrochemical applications [31–34].”
From Partially oxidized ruthenium aerogel as highly active bifunctional electrocatalyst for overall water splitting in both alkaline and acidic media (2022) · cites this paper as [33]
Self-supported noble metal aerogels have high available active sites, good mass transportation, and great durability.
“Besides, in recent years, self-supported noble metal aerogels, endowing outstanding functions of NBBs to aerogels, have caught the researchers' interest due to their high available active sites, good mass transportation, and great durability.9,14,21−25”
From A Versatile Strategy for Tailoring Noble Metal Supramolecular Gels/Aerogels and Their Application in Hydrogen Evolution (2019) · cites this paper as [23]
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References 34 · Cited by 213
- Authors
- Cai, B., Wen, D., Liu, W., Herrmann, A., Benad, A., & Eychmüller, A.
- Affiliations
- Technische Universität Dresden (DE)
- Corresponding author
- Eychmüller, Alexander
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2015-09-10
- Volume
- 54
- Issue
- 44
- Pages
- 13101-13105
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2167611604
- Cited by
- 213
- References
- 34
- Citations by year
- 2026: 2 · 2025: 12 · 2024: 17 · 2023: 22 · 2022: 24 · 2021: 28 · 2020: 23 · 2019: 30 · 2018: 23 · 2017: 21 · 2016: 11
- FWCI
- 5.43
- Type
- journal article
- Language
- en
- Open access
- green
- tud.qucosa.de
- Licence
- Locations
- Angewandte Chemie International Edition (publishedVersion)
- PubMed (publishedVersion)
- Qucosa (Saxon State and University Library Dresden) (submittedVersion, other-oa)
- Funders
- European Research Council
- ERC (340419)
- Alexander von Humboldt foundation
- DFG (EY 16/10-2, EY 16/18-1)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Chemistry › Spectroscopy › Aerogels and thermal insulation
- Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
- Keywords
- Pd-Ni alloys, hollow nanospheres, self-assembly, electrocatalysis, ethanol oxidation, transition metal doping, shell thickness control, three-dimensional network, mass activity, palladium on carbon
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