Synergistic Ruthenium-Doped Amorphous IrO_<i>x</i> Matrix for Robust Oxygen Evolution.

ABSTRACT: Iridium oxides (IrO_x) are benchmark catalysts for the acidic oxygen evolution reaction, but their performance is often constrained by a trade-off between catalytic activity and long-term stability. Herein, we utilize an amorphous IrO_x matrix as a robust scaffold for synergistic ruthenium (Ru) doping, a strategy designed to enhance catalytic activity while maintaining an exceptional stability. A simple nitrate-assisted synthesis produces ultrathin Ru-doped amorphous IrO_x nanosheets (2.36 nm thick) with a significantly enhanced specific surface area. Combined spectroscopic analysis and density functional theory calculations reveal that atomically dispersed Ru dopants induce charge transfer to adjacent Ir sites, which optimizes the Ir d-ba

SUBMITTER: Hu J 

PROVIDER: S-EPMC12755195 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature