Dynamic oxygen adsorption on single-atomic Ruthenium catalyst with high performance for acidic oxygen evolution reaction

Abstract Achieving active and stable oxygen evolution reaction (OER) in acid media based on single-atom catalysts is highly promising for cost-effective and sustainable energy supply in proton electrolyte membrane electrolyzers. Here, we report an atomically dispersed Ru 1 -N 4 site anchored on nitrogen-carbon support (Ru-N-C) as an efficient and durable electrocatalyst for acidic OER. The single-atom Ru-N-C catalyst delivers an exceptionally intrinsic activity, reaching a mass activity as high as 3571 A g metal −1 and turnover frequency of 3348 O 2 h −1 with a low overpotential of 267 mV at a current density of 10 mA cm −2 . The catalyst shows no evident deactivation or decomposition after 30-hour operation…

• SS
  Salt Science Research Foundation

  Award: 2017YFA0402800
• NN
  National Natural Science Foundation of China

  Awards: 21533007, 21703222, 21688102, 11621063, 21471143, 2017YFA0402800
• AU
  Anhui University
• YI
  Youth Innovation Promotion Association of the Chinese Academy of Sciences

  Award: CX2310000091
• UO
  University of Science and Technology of China

  Award: KY2310000020
• NS
  National Synchrotron Radiation Laboratory
• FR
  Fundamental Research Funds for the Central Universities

  Awards: 11621063, 21688102, 2017YFA0402800, KY2310000020
• YI
  Youth Innovation Promotion Association