Pb-rich Cu grain boundary sites for selective CO-to-n-propanol electroconversion.

ABSTRACT: Electrochemical carbon monoxide (CO) reduction to high-energy-density fuels provides a potential way for chemical production and intermittent energy storage. As a valuable C₃ species, n-propanol still suffers from a relatively low Faradaic efficiency (FE), sluggish conversion rate and poor stability. Herein, we introduce an "atomic size misfit" strategy to modulate active sites, and report a facile synthesis of a Pb-doped Cu catalyst with numerous atomic Pb-concentrated grain boundaries. Operando spectroscopy studies demonstrate that these Pb-rich Cu-grain boundary sites exhibit stable low coordination and can achieve a stronger CO adsorption for a higher surface CO coverage. Using this Pb-Cu catalyst, we achieve a CO-to-n-propanol FE (FE_propanol) of 47 ± 3% and a hal

SUBMITTER: Niu W 

PROVIDER: S-EPMC10423280 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature