Comparative study of Co₃O₄(111), CoFe₂O₄(111), and Fe₃O₄(111) thin film electrocatalysts for the oxygen evolution reaction.

ABSTRACT: Water electrolysis to produce 'green H₂' with renewable energy is a promising option for the upcoming green economy. However, the slow and complex oxygen evolution reaction at the anode limits the efficiency. Co₃O₄ with added iron is a capable catalyst for this reaction, but the role of iron is presently unclear. To investigate this topic, we compare epitaxial Co₃O₄(111), CoFe₂O₄(111), and Fe₃O₄(111) thin film model electrocatalysts, combining quasi in-situ preparation and characterization in ultra-high vacuum with electrochemistry experiments. The well-defined composition and structure of the thin epitaxial films permits the obtention of quantitatively comparable results. CoFe₂O

SUBMITTER: Davis EM 

PROVIDER: S-EPMC10409724 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature