[Figure 2] Atomic dispersion of iridium single atoms and comparison of long-term operational stability. (IMAGE)

National Research Council of Science & Technology

[Figure 2] Atomic dispersion of iridium single atoms and comparison of long-term operational stability.

Caption

(Left) High-resolution scanning transmission electron microscopy (HR-STEM) images confirm the uniform dispersion of iridium (Ir) single atoms without detectable aggregation. (Right) Compared with representative state-of-the-art catalysts, the long-term anion-exchange membrane (AEM) water electrolysis performance of the ‘All-in-one’ single-atom catalyst developed in this work exhibits markedly lower degradation during extended operation, even at high current density (1.0 A·cm⁻²), indicating robust operational stability relevant to practical electrolysis conditions.

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Korea Institute of Science and Technology

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