The Roles of Composition and Mesostructure of Cobalt-Based Spinel Catalysts in Oxygen Evolution Reactions.

ABSTRACT: By using the crystalline precursor decomposition approach and direct co-precipitation the composition and mesostructure of cobalt-based spinels can be controlled. A systematic substitution of cobalt with redox-active iron and redox-inactive magnesium and aluminum in a cobalt spinel with anisotropic particle morphology with a preferred 111 surface termination is presented, resulting in a substitution series including Co₃ O₄ , MgCo₂ O₄ , Co₂ FeO₄ , Co₂ AlO₄ and CoFe₂ O₄ . The role of redox pairs in the spinels is investigated in chemical water oxidation by using ceric ammonium nitrate (CAN test), electrochemical oxygen evolution reaction (OER) and H₂ O₂ decompos

SUBMITTER: Rabe A 

PROVIDER: S-EPMC9298119 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature