Oxygen Bridge Governs OER via Deep Self-Reconstruction in Fe-Co Oxyhydroxides.

ABSTRACT: The oxygen evolution reaction (OER) in water splitting involves complex multi-electron-proton transfer processes and represents the rate-determining step limiting overall electrolysis efficiency. Developing non-noble-metal catalysts with high activity and stability is therefore essential. Herein, a heterogeneous synthesis strategy was employed to in situ construct an iron-rich layered sulfate precursor (Fe_0.42Co_0.58-SO₄/NF) on nickel foam, which underwent deep self-reconstruction in alkaline electrolyte to form nanoflower-like Fe_0.42Co_0.58OOH/NF. The optimized catalyst maintained its iron-rich composition and hierarchical structure, delivering outstanding OER performance with an overpotential of 220 mV at 10 mA·cm^-2, a Tafel

SUBMITTER: Liu M 

PROVIDER: S-EPMC12786700 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature