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- W3020927270 endingPage "119031" @default.
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- W3020927270 abstract "Porous electrodes based on Bismuth dendrites (Biden) were fabricated using Dynamic Hydrogen Bubbling Templates (DHBT). Direct visualization of surface-active sites with the help of advanced transmission electron microscopic (TEM) imaging reveals the presence of abundant defect structures and high-index faceting, while selective decoration of low-index facets of Bi dendrites indicate that they are the most active Bi surface sites. The fabricated electrodes show high selectivity toward CO2 electroreduction to formate synthesis, with a 98% Faradaic Efficiency and a current density of 18.8 mA cm−2 (344 μmol cm−2 h–1) at –0.82 V vs RHE, which is only 600 mV more negative than the thermodynamic potential. Both the dendritic structure and CO2 electrolysis performances are remarkably stable over long electrolysis periods (∼15 h). Additionally, large production rates (1.63 mmol cm−2 h–1 or 95 mA cm−2 at –0.82 V vs RHE) without significant penalty on the formate Faradaic Efficiency (92 ± 4%) was achieved in high-pressure flow cell, where the CO2 flux is greatly enhanced compare to an H-cell. The work thus outlines an effective strategy for the development of dendritic materials with superior performance toward electroreduction of CO2." @default.
- W3020927270 created "2020-05-13" @default.
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- W3020927270 date "2020-10-01" @default.
- W3020927270 modified "2023-10-11" @default.
- W3020927270 title "Uncovering the nature of electroactive sites in nano architectured dendritic Bi for highly efficient CO2 electroreduction to formate" @default.
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- W3020927270 doi "https://doi.org/10.1016/j.apcatb.2020.119031" @default.
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