Highly Active Ir/TiO2 Electrodes for the Oxygen Evolution Reaction Using Atomic Layer Deposition on Ordered Porous Substrates

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Details zur Publikation

Autorinnen und Autoren: Schlicht S, Büttner P, Bachmann J
Zeitschrift: ACS Applied Energy Materials
Jahr der Veröffentlichung: 2019
Band: 2
Heftnummer: 3
Seitenbereich: 2344-2349
ISSN: 2574-0962


Abstract

Nanostructured Ir/TiO2 electrodes are investigated toward the oxygen evolution reaction (OER) from water. The electrodes are prepared based on highly ordered TiO2 nanotubes grown from Ti foils with full geometric control. The tube walls are coated with iridium using atomic layer deposition (ALD), which allows for an accurate tuning of the amount deposited. The electrocatalytic performance of electrodes with different TiO2 tube lengths and iridium catalyst loadings toward OER is quantified by cyclic voltammetry and steady-state electrolysis. This study enables us to minimize the catalyst loading, and we reach a current density of 31.3 mA cm(-2) at an overpotential eta = 0.34 V for a tube length of L = 12 mu m and a Ir coating thickness of t = 6 nm. The benchmark of 10 mA cm(-2) is already achieved at a lower overpotential of eta = 0.24 V.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Bachmann, Julien Prof.
Lehrstuhl für Chemistry of thin film materials
Büttner, Pascal
Lehrstuhl für Chemistry of thin film materials
Schlicht, Stefanie
Lehrstuhl für Chemistry of thin film materials


Zitierweisen

APA:
Schlicht, S., Büttner, P., & Bachmann, J. (2019). Highly Active Ir/TiO2 Electrodes for the Oxygen Evolution Reaction Using Atomic Layer Deposition on Ordered Porous Substrates. ACS Applied Energy Materials, 2(3), 2344-2349. https://dx.doi.org/10.1021/acsaem.9b00402

MLA:
Schlicht, Stefanie, Pascal Büttner, and Julien Bachmann. "Highly Active Ir/TiO2 Electrodes for the Oxygen Evolution Reaction Using Atomic Layer Deposition on Ordered Porous Substrates." ACS Applied Energy Materials 2.3 (2019): 2344-2349.

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Zuletzt aktualisiert 2019-16-04 um 01:08