Peer-reviewed veterinary case report
Unlocking Enhanced Catalysis Stability in Acidic Oxygen Evolution: Structural Insights for PEM Applications under High-Current Density.
- Year:
- 2025
- Authors:
- Zhang XY et al.
- Affiliation:
- Department of Chemistry · China
Abstract
In proton exchange membrane water electrolysis (PEMWE), catalysts for acidic oxygen evolution reaction (OER) that demonstrate high current density and stability are essential. Herein, we synthesized La-doped RuO<sub>2</sub> (La-RuO<sub>2</sub>@TM) nanorod composite catalysts in situ on titanium mesh (TM) using a one-step low-temperature pyrolysis method. La-RuO<sub>2</sub>@TM displays excellent catalytic performance (1.533 V at 100 mA cm<sup>-2</sup>) and remarkable stability, showing no significant degradation in performance over 450 hours of operation. Density functional theory (DFT) calculations indicate that the formation of the La-O-Ru local structure modulates the adsorption strength of reaction intermediates, alleviates metal (Ru) leaching, and reduces oxygen loss, significantly enhancing the material's durability in acidic OER. The PEM electrolyzer utilizing La-RuO<sub>2</sub>@TM operates at 1.815 V with a current density of 1.0 A cm<sup>-2</sup>, maintaining stable performance for 120 h at 60 °C. This study offers valuable insights for designing efficient and durable acidic OER catalysts.
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Search related cases →Original publication: https://europepmc.org/article/MED/39948039