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- W2985650822 abstract "Lead cathodes show decreasing Faradaic Efficiency (FE) in electrochemical conversion of CO2 to formate, favoring hydrogen, within minutes of operation in KHCO3 electrolyte at −1 to −1.3 V vs RHE. Periodic anodic polarization (pulsed electrochemistry) is demonstrated to result in a high time-averaged FE towards formate. Specifically, an anodic polarization time of 0.1–1 s is sufficient to obtain a Pb-surface providing an averaged formate FE of 30–50%, when the cathodic polarization time is limited to a few seconds. A Pourbaix diagram and Raman spectra are provided, which show that PbCO3 is formed on the surface of the cathode in KHCO3 electrolyte at anodic potential (0.05 V vs RHE), which compound is likely inducing the high FE towards formate. Our method thus provides a means to operate Pb electrodes in electrochemical CO2 reduction with high stability, at a low energy penalty." @default.
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- W2985650822 date "2020-07-01" @default.
- W2985650822 modified "2023-10-15" @default.
- W2985650822 title "Pulsed electrochemical synthesis of formate using Pb electrodes" @default.
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- W2985650822 doi "https://doi.org/10.1016/j.apcatb.2019.118420" @default.
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