Intrinsic spin shielding effect in platinum-rare-earth alloy boosts oxygen reduction activity.

ABSTRACT: Oxygen reduction reactions (ORRs) involve a multistep proton-coupled electron process accompanied by the conversion of the apodictic spin configuration. Understanding the role of spin configurations of metals in the adsorption and desorption of oxygen intermediates during ORRs is critical for the design of efficient ORR catalysts. Herein, a platinum-rare-earth-metal-based alloy catalyst, Pt₂Gd, is introduced to reveal the role of spin configurations in the catalytic activity of materials. The catalyst exhibits a unique intrinsic spin reconfiguration because of interactions between the Gd-4f and Pt-5d orbitals. The adsorption and desorption of the oxygen species are optimized by modifying the spin symmetry and electronic structures of the material for increased ORR efficiency. Th

SUBMITTER: Zhu S 

PROVIDER: S-EPMC10600901 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature