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- W3214678120 endingPage "2104138" @default.
- W3214678120 startingPage "2104138" @default.
- W3214678120 abstract "Electrochemical CO2 reduction (ECR) is one of the promising CO2 recycling technologies sustaining the natural carbon cycle and offering more sustainable higher-energy chemicals. Zn- and Pb-based catalysts have improved formate selectivity, but they suffer from relatively low current activities considering the competitive CO selectivity on Zn. Here, lead-doped zinc (Zn(Pb)) electrocatalyst is optimized to efficiently reduce CO2 to formate, while CO evolution selectivity is largely controlled. Selective formate is detected with Faradaic efficiency (FEHCOOH ) of ≈95% at an outstanding partial current density of 47 mA cm-2 in a conventional H-Cell. Zn(Pb) is further investigated in an electrolyte-fed device achieving a superior conversion rate of ≈100 mA cm-2 representing a step closer to practical electrocatalysis. The in situ analysis demonstrates that the Pb incorporation plays a crucial role in CO suppression stem from the generation of the Pb-O-C-O-Zn structure rather than the CO-boosted Pb-O-C-Zn. Density functional theory (DFT) calculations reveal that the alloying effect tunes the adsorption energetics and consequently modifies the electronic structure of the system for an optimized asymmetric oxo-bridged intermediate. The alloying effect between Zn and Pb controls CO selectivity and achieves a superior activity for a selective CO2 -to-formate reduction." @default.
- W3214678120 created "2021-11-22" @default.
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- W3214678120 date "2021-11-10" @default.
- W3214678120 modified "2023-10-18" @default.
- W3214678120 title "Asymmetric Oxo‐Bridged ZnPb Bimetallic Electrocatalysis Boosting CO <sub>2</sub> ‐to‐HCOOH Reduction" @default.
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- W3214678120 doi "https://doi.org/10.1002/advs.202104138" @default.
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