Practically applicable water oxidation electrodes from 3D-printed Ti6Al4V scaffolds with surface nanostructuration and iridium catalyst coating

Hofer A, Wachter S, Döhler D, Laube A, Sánchez Batalla B, Fu Z, Weidlich C, Struckmann T, Körner C, Bachmann J (2022)

Publication Language: English

Publication Type: Journal article

Publication year: 2022

Journal

Electrochimica Acta Elsevier

Book Volume: 417

Pages Range: 140308

Article Number: 140308

DOI: 10.1016/j.electacta.2022.140308

Abstract

This study establishes the applicability of 3D printing (additive manufacturing) towards the generation of titanium alloy scaffolds for water oxidation electrodes. The scaffolds can be subsequently nanostructured by electrochemical anodization to enhance their surface area and coated with iridium as the electrocatalyst. We focus on the characterization of the functional electrodes in process-relevant conditions (1 M HSO, 60 C, stirring) in terms of their performance and stability in a holistic manner. Various preparative conditions yield various patterns of performance and stability, as quantified by overpotentials in steady-state electrolyses, maximum current densities in dynamic voltammetry, surface roughness rf, and by overpotential increase, iridium loss, and decrease after 100 h of operation, on the other hand. In other words, the system is highly flexible and can be adapted to specific constraints depending on the application chosen.

Authors with CRIS profile

André Hofer Lehrstuhl für Chemistry of thin film materials Sebastian Wachter Advanced Materials and Processes (ZMP) Dirk Döhler Lehrstuhl für Chemistry of thin film materials Beatriz Sánchez Batalla Lehrstuhl für Chemistry of thin film materials Zongwen Fu Advanced Materials and Processes (ZMP) Carolin Körner Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle) 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

Hochschule für Angewandte Wissenschaften Hamburg (HAW) DE Germany (DE) Gesellschaft für Chemische Technik und Biotechnologie (DECHEMA) DE Germany (DE)

How to cite

APA:

Hofer, A., Wachter, S., Döhler, D., Laube, A., Sánchez Batalla, B., Fu, Z.,... Bachmann, J. (2022). Practically applicable water oxidation electrodes from 3D-printed Ti6Al4V scaffolds with surface nanostructuration and iridium catalyst coating. Electrochimica Acta, 417, 140308. https://doi.org/10.1016/j.electacta.2022.140308

MLA:

Hofer, André, et al. "Practically applicable water oxidation electrodes from 3D-printed Ti6Al4V scaffolds with surface nanostructuration and iridium catalyst coating." Electrochimica Acta 417 (2022): 140308.

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