Online Monitoring of Electrochemical Carbon Corrosion in Alkaline Electrolytes by Differential Electrochemical Mass Spectrometry

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dc.contributor.authorMçller, Sandra
dc.contributor.authorBarwe, Stefan
dc.contributor.authorMasa, Justus
dc.contributor.authorSchuhmann, Wolfgang
dc.date.accessioned2022-11-16T11:58:50Z
dc.date.available2022-11-16T11:58:50Z
dc.date.issued2020
dc.description.abstractCarbon corrosion at high anodic potentials is a major source of instability, especially in acidic electrolytes and impairs the long-term functionality of electrodes. In-depth investigation of carbon corrosion in alkaline environment by means of differential electrochemical mass spectrometry (DEMS) is prevented by the conversion of CO2 into CO32−. We report the adaptation of a DEMS system for online CO2 detection as the product of carbon corrosion in alkaline electrolytes. A new cell design allows for in situ acidification of the electrolyte to release initially dissolved CO32− as CO2 in front of the DEMS membrane and its subsequent detection by mass spectrometry. DEMS studies of a carbon-supported nickel boride (NixB/C) catalyst and Vulcan XC 72 at high anodic potentials suggest protection of carbon in the presence of highly active oxygen evolution electrocatalysts. Most importantly, carbon corrosion is decreased in alkaline solution.en_US
dc.identifier.citationMöller, S., Barwe, S., Masa, J., Wintrich, D., Seisel, S., Baltruschat, H., & Schuhmann, W. (2020). Online monitoring of electrochemical carbon corrosion in alkaline electrolytes by differential electrochemical mass spectrometry. Angewandte Chemie International Edition, 59(4), 1585-1589.https://doi.org/10.1002/anie.201909475en_US
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/5282
dc.language.isoenen_US
dc.publisherAngewandte Chemie International Editionen_US
dc.titleOnline Monitoring of Electrochemical Carbon Corrosion in Alkaline Electrolytes by Differential Electrochemical Mass Spectrometryen_US
dc.typeArticleen_US
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