Collectively optimized Pt–O bond and morphology engineering of structurally ordered Pt3Zn intermetallic for high-efficiency zinc–air devices

Abstract

We report an ordered Pt₃Zn intermetallic with an optimized Pt–O bond, featuring a unique nanocube (NC) morphology for high-efficiency zinc–air devices. Rechargeable zinc–air batteries based on the Pt₃Zn NC catalyst exhibit a superior electrochemical performance. Theoretical calculations demonstrate that alloying with Zn atoms modifies the electronic structure of the Pt surface, optimizing Pt binding energy with OH_abs/CO_abs intermediates and thus enhancing electrocatalytic activity.