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September 5, 2025Small

Dual Doping of Ruthenium and Iridium in Octahedral Sites of Spinel Co3O4 Nanoflowers for Enhanced PEM Water Electrolysis

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Co-doping with Ru and Ir enhances electrocatalytic performance in PEM water electrolysis, suggesting improved energy efficiency.

The RuIr-Co3O4 electrocatalyst achieved a low overpotential of 220 mV, demonstrating its efficiency in the oxygen evolution reaction.
In 600 hours of operation, this electrocatalyst maintains stability without significant deterioration, indicating strong durability.
The current density reached 500 mA cm−2 at 1.67 V, showcasing the electrocatalyst's potential for high-performance water electrolysis.
Theoretical calculations reveal a favorable oxygen path mechanism with a significantly reduced energy barrier, enhancing OER efficiency.

Dajan et al. (2025) studied this question.

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