Aligned d-orbital energy level of dual-atom sites catalysts for oxygen reduction reaction in anion exchange membrane fuel cells.

ABSTRACT: The inherent scaling relationships between adsorption energies of oxygen-containing intermediates impose an intrinsic limitation on the maximum oxygen reduction reaction (ORR) activity, which represents one of the bottlenecks for the practical application of anion exchange membrane fuel cells (AEMFCs). To address this challenge, we align the 3dz² orbital energy levels of Fe and Co to selectively customize the dissociative ORR pathway without the formation of OOH* intermediates, circumventing the conventional OH*-OOH* scaling relations. This rational design is achieved by atomic phosphorus(P) substitution, which not only optimizes orbital matching towards O-O cis-bridge adsorption, but also stabilizes the spontaneously adsorbed OH ligand as an electronic modifier. Due to these at

SUBMITTER: Zeng Y 

PROVIDER: S-EPMC12397255 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature