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• W4385780019 abstract "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 C 3 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 half-cell energy conversion efficiency (EE) of 25% in a flow cell. When applied in a membrane electrode assembly (MEA) device, a stable FE propanol above 30% and the corresponding full-cell EE of over 16% are maintained for over 100 h with the n-propanol partial current above 300 mA (5 cm 2 electrode). Furthermore, operando X-ray absorption spectroscopy and theoretical studies reveal that the structurally-flexible Pb-Cu surface can adaptively stabilize the key intermediates, which strengthens the *CO binding while maintaining the C–C coupling ability, thus promoting the CO-to-n-propanol conversion." @default.
• W4385780019 created "2023-08-13" @default.
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• W4385780019 date "2023-08-12" @default.
• W4385780019 modified "2023-10-18" @default.
• W4385780019 title "Pb-rich Cu grain boundary sites for selective CO-to-n-propanol electroconversion" @default.
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• W4385780019 doi "https://doi.org/10.1038/s41467-023-40689-w" @default.
• W4385780019 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37573371" @default.
• W4385780019 hasPublicationYear "2023" @default.
• W4385780019 type Work @default.

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