Atomic layer deposition for efficient oxygen evolution reaction at Pt/Ir catalyst layers

Schlicht S, Percin K, Kriescher S, Hofer A, Weidlich C, Wessling M, Bachmann J (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Beilstein Journal of Nanotechnology Beilstein-Institut

Book Volume: 11

Pages Range: 952-959

DOI: 10.3762/bjnano.11.79

Abstract

We provide a direct comparison of two distinct methods of Ti felt surface treatment and Pt/Ir electrocatalyst deposition for the positive electrode of regenerative fuel cells and vanadium-air redox flow batteries. Each method is well documented in the literature, and this paper provides a direct comparison under identical experimental conditions of electrochemical measurements and in identical units. In the first method, based on classical engineering, the bimetallic catalyst is deposited by dip-coating in a precursor solution of the salts followed by their thermal decomposition. In the alternative method, more academic in nature, atomic layer deposition (ALD) is applied to the felts after anodization. ALD allows for a controlled coating with ultralow noble-metal loadings in narrow pores. In acidic electrolyte, the ALD approach yields improved mass activity (557 A.g(-1) as compared to 80 A.g(-1) at 0.39 V overpotential) on the basis of the noble-metal loading, as well as improved stability.

Authors with CRIS profile

Stefanie Schlicht Lehrstuhl für Chemistry of thin film materials André Hofer Lehrstuhl für Chemistry of thin film materials Julien Bachmann Lehrstuhl für Chemistry of thin film materials

Related research project(s)

‘Tubulyze’ — Neuartige, Kostenreduktionen ermöglichende, Produktionsverfahren für eine tubuläre PEM-Elektrolysezelle (Tubulyze) Feb. 1, 2019 - Dec. 31, 2022

Involved external institutions

DWI – Leibniz-Institut für Interaktive Materialien e.V. DE Germany (DE) Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen DE Germany (DE) Gesellschaft für Chemische Technik und Biotechnologie (DECHEMA) DE Germany (DE)

How to cite

APA:

Schlicht, S., Percin, K., Kriescher, S., Hofer, A., Weidlich, C., Wessling, M., & Bachmann, J. (2020). Atomic layer deposition for efficient oxygen evolution reaction at Pt/Ir catalyst layers. Beilstein Journal of Nanotechnology, 11, 952-959. https://doi.org/10.3762/bjnano.11.79

MLA:

Schlicht, Stefanie, et al. "Atomic layer deposition for efficient oxygen evolution reaction at Pt/Ir catalyst layers." Beilstein Journal of Nanotechnology 11 (2020): 952-959.

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