articleACS NanoJan 5, 2026Closed access

Decoupling the Effects of Ruthenium Sites and Oxygen Vacancies on the Mechanism Regulation of Acidic Water Oxidation

TYTiantian YaoQFQiang FuKWKaixi WangYXYifei XuLLLei Lin

Harbin Institute of Technology · Beijing Institute of Optoelectronic Technology · +5 more institutions

PubMed
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Abstract

Precise regulation of the oxygen evolution reaction (OER) pathway to a more favorable lattice oxygen mechanism (LOM) is essential for achieving high-performance acidic OER electrocatalysts. Although cation doping and oxygen vacancy (Ov) engineering are fundamental strategies, their individual contributions to activating the LOM mechanism remain unclear. Herein, we report a Ru-doped Co3O4 catalyst enriched with Ov (Ru–Co3O4–x) as the model system to decouple these effects. Combined experimental characterizations and density functional theory (DFT) calculations reveal that Ov can exclusively promote the LOM mechanism, while Ru dopants minimally alter the catalytic pathway. The incorporation of Ru enables the…

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8
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FWCI
29.16
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100%
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72
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13

Topics & keywords

Topics
Keywords
  • Catalysis
  • Oxygen evolution
  • Oxygen
  • Overpotential
  • Dopant
  • Ruthenium
  • Density functional theory
  • Decoupling (probability)
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