What does this research mean for the field?

Doping NiOOH with oxophilic Fe drives the oxygen evolution reaction toward the oxide pathway mechanism, creating a highly efficient and stable catalyst that overcomes the limitations of traditional adsorbate and lattice oxygen mechanisms. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To determine whether incorporating oxophilic iron into NiOOH can trigger an oxide pathway mechanism (OPM) that overcomes the scaling limitations and structural degradation typical of conventional water oxidation pathways.

August 22, 2026Advanced Functional Materials

Oxophilic Regulation Drives the Mechanism Transition of NiOOH Toward the Oxide Pathway for Water Oxidation

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Authors

LTLiyao TangShandong University of Technology TZTianpeng ZhangShandong University of Technology ZCZhijie CaoShandong University of Technology

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Implication

Experimental study demonstrates enhanced water oxidation via an oxide pathway mechanism in Fe-doped NiOOH, highlighting high efficiency and durability for industrial electrolysis.

Key Points

To determine whether incorporating oxophilic iron into NiOOH can trigger an oxide pathway mechanism (OPM) that overcomes the scaling limitations and structural degradation typical of conventional water oxidation pathways.
Synthesized oxophilic Fe-doped NiOOH (Fe0.6NiOOH) and assessed electrocatalytic water oxidation performance in alkaline electrolyte and in an anion-exchange membrane electrolyzer (30 wt.% KOH, 80 °C).
Investigated the catalytic reaction pathway and electronic structure using in situ spectroscopy paired with density functional theory (DFT) calculations.
Fe0.6NiOOH achieved an overpotential of 199 mV at 10 mA cm⁻² in alkaline media and maintained continuous operation for over 1200 h at 1 A cm⁻² without significant degradation.
The Pt/C||Fe0.6NiOOH electrode pair operated continuously for 1500 h at 1 A cm⁻² in an anion-exchange membrane electrolyzer under industrial conditions (30 wt.% KOH at 80 °C).
Spectroscopic and theoretical analyses confirmed that oxophilic Fe shortens Ni–O and Fe–O bonds, enhances *OH adsorption, and promotes *O radical formation and *O–O* coupling to drive the oxide pathway mechanism.

Cite This Study

Tang et al. (2026) studied this question.

synapsesocial.com/papers/6a895facca7ade938187e708 https://doi.org/10.1002/adfm.77785

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Implication

Experimental study demonstrates enhanced water oxidation via an oxide pathway mechanism in Fe-doped NiOOH, highlighting high efficiency and durability for industrial electrolysis.

Oxophilic Regulation Drives the Mechanism Transition of NiOOH Toward the Oxide Pathway for Water Oxidation

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Implication

Key Points

Cite This Study

Oxophilic Regulation Drives the Mechanism Transition of NiOOH Toward the Oxide Pathway for Water Oxidation

Discussion

Member takes

Implication

Key Points

Cite This Study

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