Subject: Chemical engineering
Subject: Chemical sciences
Subject: Materials engineering
Subject: Nano-technology
Subject: Other natural sciences
Subject: Physical sciences
Year: 2021
Type: Article
Type: PeerReviewed
Title: Electrodeposition of palladium-dotted nickel nanowire networks as a robust self-supported methanol electrooxidation catalyst
Author: Boettcher, Tim
Author: Stojkovikj, Sasho
Author: Khadke, Prashant
Author: Kunz, Ulrike
Author: Mayer, Matthew T.
Author: Roth, Christina
Author: Ensinger, Wolfgang
Author: Muench, Falk
Abstract: Mass activity and long-term stability are two major issues in current fuel cell catalyst designs. While supported catalysts normally suffer from poor long-term stability but show high mass activity, unsupported catalysts tend to perform better in the first point while showing deficits in the latter one. In this study, a facile synthesis route towards self-supported metallic electrocatalyst nanoarchitectures with both aspects in mind is outlined. This procedure consists of a palladium seeding step of ion track-etched polymer templates followed by a nickel electrodeposition and template dissolution. With this strategy, free-standing nickel nanowire networks which contain palladium nanoparticles only in their outer surface are obtained. These networks are tested in anodic half-cell measurements for demonstrating their capability of oxidising methanol in alkaline electrolytes. The results from the electrochemical experiments show that this new catalyst is more tolerant towards high methanol concentrations (up to ) than a commercial carbon supported palladium nanoparticle catalyst and provides a much better long-term stability during potential cycling.
Publisher: Springer Nature
Relation: https://eprints.ugd.edu.mk/33772/
Identifier: oai:eprints.ugd.edu.mk:33772
Identifier: https://eprints.ugd.edu.mk/33772/1/s10853-021-06088-6.pdfIdentifier: Boettcher, Tim and Stojkovikj, Sasho and Khadke, Prashant and Kunz, Ulrike and Mayer, Matthew T. and Roth, Christina and Ensinger, Wolfgang and Muench, Falk (2021) Electrodeposition of palladium-dotted nickel nanowire networks as a robust self-supported methanol electrooxidation catalyst. Journal of Materials Science, 56. pp. 12620-12633. ISSN 1573-4803
Identifier: https://doi.org/10.1007/s10853-021-06088-6
