Hydrogen spillover in complex oxide multifunctional sites improves acidic hydrogen evolution electrocatalysis

Abstract Improving the catalytic efficiency of platinum for the hydrogen evolution reaction is valuable for water splitting technologies. Hydrogen spillover has emerged as a new strategy in designing binary-component Pt/support electrocatalysts. However, such binary catalysts often suffer from a long reaction pathway, undesirable interfacial barrier, and complicated synthetic processes. Here we report a single-phase complex oxide La 2 Sr 2 PtO 7+δ as a high-performance hydrogen evolution electrocatalyst in acidic media utilizing an atomic-scale hydrogen spillover effect between multifunctional catalytic sites. With insights from comprehensive experiments and theoretical calculations, the overall hydrogen…

• NN
  National Natural Science Foundation of China

  Awards: 21878158, 21576135
• PU
  Pohang University of Science and Technology
• PA
  Priority Academic Program Development of Jiangsu Higher Education Institutions

  Award: 21878158
• AR
  Australian Research Council

  Awards: DP200100500, DE190100005