Engineering Interfacial Electronic Polarization in Pt@S–Co 3 O 4– x for Superior Glycerol-Assisted Water Electrolysis

Rational modulation of the metal-oxide interface is recognized as an effective strategy for optimizing the electronic structure and catalytic performance of catalysts. Herein, using oxygen-deficient Co3O4–x nanowire arrays as a model, we demonstrate that S-doping combined with Pt modification can effectively tune the interfacial electronic interactions in Pt@S–Co3O4–x, resulting in a polarized electronic state characterized by an electron-deficient S–Co3O4–x substrate and electron-enriched Pt species. This configuration endows Pt@S–Co3O4–x with outstanding performance in glycerol-assisted water electrolysis. Specifically, a membrane electrode assembly (MEA) electrolyzer incorporating the Pt@S–Co3O4–x catalyst…

• NN
  National Natural Science Foundation of China

  Award: 22472151
• NC
  National College Students Innovation and Entrepreneurship Training Program

  Award: 202510338037