What does this research mean for the field?

Oxygen vacancies in CoFeMo oxyhydroxide mediate a dynamic cooperation between the oxide-path and lattice-oxygen mechanisms, resulting in a highly efficient and stable electrocatalyst for water oxidation. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To overcome structural degradation during electrocatalytic water oxidation by coupling oxide-path and lattice-oxygen reaction mechanisms through oxygen vacancies.

September 2, 2026Advanced Functional Materials

Oxygen‐Vacancy‐Mediated Coupling of Oxide‐Path and Lattice‐Oxygen Mechanisms in CoFeMo Oxyhydroxide for Efficient and Stable Water Oxidation

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Authors

FGFeng Gao JHJiaqing He BWBiao Wang

Discussion

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Overview

Mechanistic study demonstrates stable water oxidation using an oxygen-vacancy-rich electrocatalyst, suggesting a durable pathway design for industrial electrolyzers.

Key Points

To overcome structural degradation during electrocatalytic water oxidation by coupling oxide-path and lattice-oxygen reaction mechanisms through oxygen vacancies.
Synthesized an oxygen-vacancy-rich CoFeMo oxyhydroxide through electrochemical reconstruction of a (CoFe)MoO4 precursor.
Investigated reaction pathways using density functional theory calculations, in situ infrared spectroscopy, and isotope-labeling differential electrochemical mass spectrometry.
Tested long-term electrocatalytic durability in an anion-exchange-membrane water electrolyzer at 1 A cm−2.
The reconstructed catalyst achieves an oxygen evolution reaction overpotential of 226 mV at 10 mA cm−2.
The system sustains continuous operation at 1 A cm−2 for over 1000 h at 1.78 V in an anion-exchange-membrane water electrolyzer.
Spectroscopic and isotopic data confirm a self-regulated cycle where the oxide-path mechanism dominates oxygen coupling while lattice oxygen participation regenerates vacancy motifs.

Cite This Study

Gao et al. (2026) studied this question.

synapsesocial.com/papers/6a97e25ec562ede874ec66ae https://doi.org/10.1002/adfm.78048

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September 2, 2026Advanced Functional Materials

Oxygen‐Vacancy‐Mediated Coupling of Oxide‐Path and Lattice‐Oxygen Mechanisms in CoFeMo Oxyhydroxide for Efficient and Stable Water Oxidation

View Full Paper

Ask AI

Bookmark

Authors

FGFeng Gao JHJiaqing He BWBiao Wang

Discussion

Member takes

Overview

Mechanistic study demonstrates stable water oxidation using an oxygen-vacancy-rich electrocatalyst, suggesting a durable pathway design for industrial electrolyzers.

Key Points

To overcome structural degradation during electrocatalytic water oxidation by coupling oxide-path and lattice-oxygen reaction mechanisms through oxygen vacancies.
Synthesized an oxygen-vacancy-rich CoFeMo oxyhydroxide through electrochemical reconstruction of a (CoFe)MoO4 precursor.
Investigated reaction pathways using density functional theory calculations, in situ infrared spectroscopy, and isotope-labeling differential electrochemical mass spectrometry.
Tested long-term electrocatalytic durability in an anion-exchange-membrane water electrolyzer at 1 A cm−2.
The reconstructed catalyst achieves an oxygen evolution reaction overpotential of 226 mV at 10 mA cm−2.
The system sustains continuous operation at 1 A cm−2 for over 1000 h at 1.78 V in an anion-exchange-membrane water electrolyzer.
Spectroscopic and isotopic data confirm a self-regulated cycle where the oxide-path mechanism dominates oxygen coupling while lattice oxygen participation regenerates vacancy motifs.

Cite This Study

Gao et al. (2026) studied this question.

synapsesocial.com/papers/6a97e25ec562ede874ec66ae https://doi.org/10.1002/adfm.78048

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