Electrochemical Passivation Properties of Valve Transition Metal Carbides

Goehl D, Ruess H, Mingers AM, Mayrhofer K, Schneider JM, Ledendecker M (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of The Electrochemical Society Electrochemical Society

Book Volume: 169

Journal Issue: 1

DOI: 10.1149/1945-7111/ac47e6

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.

Authors with CRIS profile

Karl Mayrhofer Lehrstuhl für Elektrokatalyse (HIERN)

Involved external institutions

Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen DE Germany (DE) Technische Universität Darmstadt DE Germany (DE) Max-Planck-Institut für Eisenforschung GmbH (MPIE) / Max Planck Institute for Iron Research DE Germany (DE)

How to cite

APA:

Goehl, D., Ruess, H., Mingers, A.M., Mayrhofer, K., Schneider, J.M., & Ledendecker, M. (2022). Electrochemical Passivation Properties of Valve Transition Metal Carbides. Journal of The Electrochemical Society, 169(1). https://dx.doi.org/10.1149/1945-7111/ac47e6

MLA:

Goehl, Daniel, et al. "Electrochemical Passivation Properties of Valve Transition Metal Carbides." Journal of The Electrochemical Society 169.1 (2022).

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