Electrocatalytic water oxidation with manganese phosphates.

ABSTRACT: As inspired by the Mn₄CaO₅ oxygen evolution center in nature, Mn-based electrocatalysts have received overwhelming attention for water oxidation. However, the understanding of the detailed reaction mechanism has been a long-standing problem. Herein, homologous KMnPO₄ and KMnPO₄•H₂O with 4-coordinated and 6-coordinated Mn centers, respectively, are prepared. The two catalysts constitute an ideal platform to study the structure-performance correlation. The presence of Mn(III), Mn(IV), and Mn(V) intermediate species are identified during water oxidation. The Mn(V)=O species is demonstrated to be the substance for O-O bond formation. In KMnPO₄•H₂O, the Mn coordination structure did not change significantly during wate

SUBMITTER: Yang S 

PROVIDER: S-EPMC10869713 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature