Iridium–Nickel Nanoparticle-Based Aerogels for Oxygen Evolution Reaction
Abstract
Iridium is considered the state-of-the-art electrocatalyst for the oxygen evolution reaction (OER) in acidic media owing to its considerably high activity and stability, yet it is a raw material that is expensive and rare. Here we present a synthesis of a bimetallic hollow aerogel structure based on iridium and nickel prepared by a very simple and environmentally friendly method. Our electrocatalyst was evaluated for the OER in a single electrolysis cell, and it showed an improvement in electrocatalytic performance over time, reaching the current density of commercial IrO 2 after 500 h of the stability test, despite half the catalyst loading. Our innovative synthesis approach provides the flexibility to tailor and improve the aerogel structures for other electrochemical devices as well, for example, photoelectrolysis, sensors, and more. In addition, we believe that this study can lead to a better understanding of the fundamental behavior of bimetallic electrocatalysts consisting of mixed compositions with transition metals.
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?
The presence of oxygen vacancies and formation of oxides (hydroxides) may exert a beneficial influence on electrocatalytic performance.
“According to previous studies, the presence of oxygen vacancies and the formation of oxides (hydroxides) may exert a beneficial influence on the electrocatalytic performance.34,45”
From Co@Ir core–shell nanochain aerogels for the hydrogen evolution reaction and the oxygen evolution reaction in alkaline media (2024) · cites this paper as [34]
The Co species can be more easily reduced hence being encapsulated by the subsequently reduced Ir species.
“This is probably due to that the Co species can be more easily reduced hence being encapsulated by the subsequently reduced Ir species.34”
From Co@Ir core–shell nanochain aerogels for the hydrogen evolution reaction and the oxygen evolution reaction in alkaline media (2024) · cites this paper as [34]
Cites
Noble Metal Aerogels─Synthesis, Characterization, and Application as Electrocatalysts
Liu, W., Herrmann, A.-K., Bigall, N. C., Rodriguez, P., Wen, D., Oezaslan, M., Schmidt, T. J., Gaponik, N., & Eychmüller, A. (2015) · Accounts of Chemical Research · doi:10.1021/ar500237c · Cited by 376 · see citing works
Pham, C. V., Bühler, M., Knöppel, J., Bierling, M., Seeberger, D., Escalera-López, D., Mayrhofer, K. J. J., Cherevko, S., & Thiele, S. (2020) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2020.118762 · Cited by 226 · see citing works
Engineering Multimetallic Aerogels for pH‐Universal HER and ORR Electrocatalysis
Du, R., Jin, W., Hübner, R., Zhou, L., Hu, Y., & Eychmüller, A. (2020) · Advanced Energy Materials · doi:10.1002/aenm.201903857 · Cited by 137 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Chen, J., Xie, Z., Tang, Y., Tang, Z., & Wang, X. (2024) · New Journal of Chemistry · doi:10.1039/d4nj02733g · Cited by 10 · see citing works
Wu, W., An, C., Li, Z., Gomaa, H., Chen, S., Qin, C., Deng, Q., Zhang, K., & Hu, N. (2025) · Fuel · doi:10.1016/j.fuel.2024.133287 · Cited by 8 · see citing works
- Authors
- Park, S., Utsch, N., Carmo, M., Shviro, M., & Stolten, D.
- Affiliations
- Institute of Energy and Climate Research, Electrochemical Process Engineering (IEK-14), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
- Forschungszentrum Jülich (DE)
- Corresponding author
- Shviro, Meital
- Venue
- ACS Applied Nano Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2022-11-18
- Volume
- 5
- Issue
- 12
- Pages
- 18060-18069
- ISSN
- 2574-0970 (ISSN-L)
- OpenAlex
- W4309344907
- Cited by
- 16
- References
- 3
- Citations by year
- 2026: 5 · 2025: 3 · 2024: 6 · 2023: 2
- FWCI
- 0.50
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- ACS Applied Nano Materials (publishedVersion)
- RWTH Publications (RWTH Aachen) (submittedVersion)
- 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
- oxygen evolution reaction, electrocatalysts, acidic media, catalyst stability, iridium oxide, green synthesis
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
