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  Electrochemical Passivation Properties of Valve Transition Metal Carbides

Göhl, D., Rueß, H., Mingers, A. M., Mayrhofer, K. J. J., Schneider, J. M., & Ledendecker, M. (2022). Electrochemical Passivation Properties of Valve Transition Metal Carbides. Journal of the Electrochemical Society, 169(1): 011502. doi:10.1149/1945-7111/ac47e6.

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 Creators:
Göhl, Daniel1, 2, Author           
Rueß, Holger3, Author           
Mingers, Andrea Maria2, Author           
Mayrhofer, Karl Johann Jakob4, 5, Author           
Schneider, Jochen Michael6, Author           
Ledendecker, Marc7, Author           
Affiliations:
1Department of Technical Chemistry, Technical University Darmstadt, Alarich-Weiss-Straße 8, 64287 Darmstadt, Germany, ou_persistent22              
2Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863354              
3Materials Chemistry, RWTH Aachen University, Kopernikusstraße 10, 52074 Aachen, Germany, ou_persistent22              
4Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany, ou_persistent22              
5Helmholtz-Institute Erlangen-Nuremberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstrasse 3, 91058 Erlangen, Germany, ou_persistent22              
6Materials Chemistry, Lehrstuhl für Werkstoffchemie, RWTH Aachen, Germany, ou_persistent22              
7Department of Technical Chemistry, Technical University Darmstadt, 64287 Darmstadt, Germany, ou_persistent22              

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 Abstract: Transition metal carbides have the potential to be employed as corrosion protective coating for a variety of applications such as e.g. steel based bipolar plates, porous transport layers or as catalyst support in polymer electrolyte membrane fuel cells and water electrolyzers. Yet, little is known of their fundamental, intrinsic corrosion and passivation properties. Herein, we conducted a detailed electrochemical passivation study of various valve transition metal carbides such as titanium carbide, tantalum carbide or tungsten carbide. Via flow cell measurements coupled to an inductively coupled plasma mass spectrometer, the in situ transition metal dissolution was monitored, and the faradaic dissolution efficiency was calculated. Together with the determination of the grown oxide layer via X-ray photoelectron spectroscopy, a thorough evaluation of the passivation efficiency was conducted. Moreover, it was shown that a beneficial stabilization effect can be achieved through alloying of different carbides which paves the way towards tailor-made coatings or catalyst support materials.

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Language(s): eng - English
 Dates: 2022-01-12
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1149/1945-7111/ac47e6
 Degree: -

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Title: Journal of the Electrochemical Society
  Abbreviation : J. Electrochem. Soc.
Source Genre: Journal
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Publ. Info: New York, NY, USA : Electrochemical Society
Pages: - Volume / Issue: 169 (1) Sequence Number: 011502 Start / End Page: - Identifier: ISSN: 0013-4651
CoNE: https://pure.mpg.de/cone/journals/resource/991042748197686