ArticleNature communications2025
Directly synthesized cobalt oxyhydroxide as an oxygen evolution catalyst in proton exchange membrane water electrolyzers.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Design for Remanufacturing and Resource Circulation in Proton Exchange Membrane Water Electrolysis Systems Using Sustainability Benefit Ratio.ChemSusChem · 2026Article
- Dynamic stability of OER electrocatalysts in water electrolyzers: multiscale deactivation mechanisms and regulation strategies.Chemical science · 2026Review
- Rapid Electrodeposition of Defect-Tuned MOF Nanoarchitectures: Synergistic Unlocking Electrochemical Performance via Dual Modulation of Morphology and Electronic Structure.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Morphology-Driven Enhancement of Alkaline OER Performance in Spinel NiCoInternational journal of molecular sciences · 2026Article
- Spectroelectrochemical insight into copper cobalt catalysts for CONature communications · 2026Article
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Authors and funding
12 authors.
Funding
Abstract
The limited choice of oxygen evolution reaction catalysts for proton exchange membrane water electrolyzers hinders their large-scale commercialization. Cobalt-based catalysts are promising candidates and usually undergo surface reconstruction into CoOOH-like structures. However, the directly synthesized CoOOH has not yet been investigated in acidic environments. Here, we show that the CoOOH is active across the whole pH range, while its redox features are pH dependent. Operando hard X-ray absorption spectroscopy characterizations show a pH-induced change in Co oxidation onset, but no change in the coverage of redox-active Co species before the oxygen evolution reaction. The pH-dependent catalytic performance is connected to the interfacial Co oxidative transformations under electrocatalytic conditions. By combining the kinetic isotope effect and the apparent activation energy with theoretical verification, we offer the mechanistic discussion of the possible reaction pathway for CoOOH. In addition, CoOOH demonstrates a stable cell potential of 100 mA cm
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Registered trials
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