Lattice Oxygen Redox Dynamics in Zeolite-Encapsulated CsPbBr₃ Perovskite OER Electrocatalysts.

ABSTRACT: Understanding the oxygen evolution reaction (OER) mechanism is pivotal for improving the overall efficiency of water electrolysis. Despite methylammonium lead halide perovskites (MAPbX₃) have shown promising OER performance due to their soft-lattice nature that allows lattice-oxygen oxidation of active α-PbO₂ layer surface, the role of A-site MA or X-site elements in the electrochemical reconstruction and OER mechanisms has yet to be explored. Here, it is demonstrated that the OER mechanism of perovskite@zeolite composites is intrinsically dominated by the A-site group of lead-halide perovskites, while the type of X-site halogen is crucial for the reconstruction kinetics of the composites. Using CsPbBr_xI_{3- x}@AlPO-5 (x = 0, 1, 2, 3) as

SUBMITTER: Ren X 

PROVIDER: S-EPMC11848567 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature