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| Hauptseite > Workflowsammlungen > In Bearbeitung > Earth-abundant NiFe and NiFe-LDH catalysts for efficient electrochemical CO₂-to-formate conversion with Cu₂O-derived cathodes |
| Hauptseite > Workflowsammlungen > In Bearbeitung > Earth-abundant NiFe and NiFe-LDH catalysts for efficient electrochemical CO₂-to-formate conversion with Cu₂O-derived cathodes |
| Journal Article | FZJ-2026-05734 |
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2027
Elsevier
New York, NY [u.a.]
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Please use a persistent id in citations: doi:10.1016/j.electacta.2026.150348
Abstract: Photovoltaic-driven electrochemical CO₂ reduction is a promising strategy for sustainable fuel and chemical production, provided that efficient, earth-abundant anodic oxygen evolution reaction (OER) catalysts are available for coupled electrolysis. Here, we investigate NiFe-based OER catalysts supported on Ni foam under alkaline conditions and evaluate their relevance for CO₂-to-formate conversion. NiFe layered double hydroxides were prepared by electrodeposition and hydrothermal synthesis to compare synthesis-dependent structure, OER activity, and full-cell performance. Characterization revealed distinct structural and electrochemical differences, which were evaluated under CO₂ electrolysis-relevant conditions using a tailored three-electrode setup and streamlined protocol. Among the electrodeposited samples, NiFe@NF-40 exhibited the most favorable electrochemical characteristics. In coupled CO₂ electrolysis with Cu₂O:S cathodes designed for formate production, both anodes showed a comparable current response over the investigated voltage range. Formate production was confirmed with Faradaic efficiencies of 27–65%. Overall, electrodeposited NiFe@NF-40 emerges as a readily prepared, earth-abundant OER catalyst for coupled CO₂ electrolysis.
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