Ru Single Atoms and Sulfur Anions Dual‐Doped NiFe Layered Double Hydroxides for High‐Current‐Density Alkaline Oxygen Evolution Reaction

Abstract New anodic electrocatalysts with high performance and cost‐effectiveness at large current densities help advance the emerging anion exchange membrane water electrolyzer (AEMWE) technology. To this end, a ruthenium (Ru) single atoms and sulfur (S) anions dual‐doped NiFe layered double hydroxides (Ru‐S‐NiFe LDH) catalyst is reported with remarkably low alkaline oxygen evolution reaction (OER) overpotentials, high mass activities and prolonged stabilities at high current densities. Inspiringly, the AEMWE performance on Ru‐S‐NiFe LDH is also superior to the NiFe LDH. In‐depth mechanism investigations reveal that Ru single atoms not only act as the highly active sites, but also facilitate the conductivity…

• NS
  National Science and Technology Council

  Award: 113‐2628‐E‐011‐004‐MY3
• EC
  European Commission

  Awards: 101192454, 101071111
• NN
  National Natural Science Foundation of China

  Award: 22179098
• BF
  Bundesministerium für Bildung und Forschung
• NT
  National Taiwan University
• NT
  National Taiwan University of Science and Technology

  Award: ITB-NTUST-2024-01
• IT
  Institut Teknologi Bandung

  Award: ITB-NTUST-2024-01
• NS
  National Science and Technology Council

  Award: NSTC 113-2628-E-011-004-MY3
• FR
  Fundamental Research Funds for the Central Universities