NDLI: Carbon materials as additives to the OER catalysts: RRDE study of carbon corrosion at high anodic potentials

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Carbon materials as additives to the OER catalysts: RRDE study of carbon corrosion at high anodic potentials

Content Provider	Hyper Articles en Ligne (HAL)
Author	Filimonenkov, Ivan Bouillet, Corinne Kerangueven, Gwénaëlle Simonov, Pavel A. Tsirlina, Galina A. Savinova, Elena
Abstract	Carbon materials are widely applied as conductive additives in studies of the oxygen evolution reaction (OER) in alkaline media catalyzed by transition metal oxides. In this work we investigate the anodic behavior of three representative carbon materials: furnace black (Vulcan XC-72R), acetylene black, and pyrolytic carbon of the Sibunit family (Sibunit-152), in 1 M NaOH at high potentials (ranging from the OER onset and up to ca. 2 V vs. RHE) in the time span from several minutes to several hours. We apply the rotating ring-disk electrode (RRDE) to separate the OER current from the carbon corrosion current. We then use transmission electron microscopy (TEM) to visualize changes in the carbon morphology resulting from corrosion. Finally, we study the OER performance of composite electrodes comprising carbon materials mixed with a La0.5Sr0.5Mn0.5Co0.5O3-delta perovskite OER catalyst, and discuss possible influence of the oxide on the carbon corrosion. (C) 2019 Elsevier Ltd. All rights reserved.
Related Links	https://hal.science/hal-03423177/file/S0013468619315257.pdf
ISSN	00134686
DOI	10.1016/j.electacta.2019.134657
Journal	Electrochimica Acta
Volume Number	321
Language	English
Publisher	HAL CCSD Elsevier
Publisher Date	2019-01-01
Access Restriction	Open
Subject Keyword	Carbon materials Oxygen evolution reaction (OER) Rotating ring-disk electrode (RRDE) Carbon corrosion Lifetime Material chemistry Chemical Sciences
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering Electrochemistry

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