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Effect of airbrush type on sprayed platinum and platinum-cobalt catalyst inks: benchmarking as PEMFC and performance in an electrochemical hydrogen pump

Effect of airbrush type on sprayed platinum and platinum-cobalt catalyst inks: benchmarking as PEMFC and performance in an electrochemical hydrogen pump
Effect of airbrush type on sprayed platinum and platinum-cobalt catalyst inks: benchmarking as PEMFC and performance in an electrochemical hydrogen pump
Proton-exchange membrane fuel cells and electrochemical hydrogen pumps are based on membrane electrode assemblies containing Pt catalysts. During their preparation, a catalyst ink is usually applied to the gas diffusion layer. Among the available methods, ink spray using an airbrush can be advantageous for making small electrodes at universities and companies. This work compares the suitability of gravity-feed and suction-feed airbrushes during the evaluation of in-house developed Pt and Pt-Co catalysts. The surface morphology of the catalyst layers was analysed by SEM and EDS and related to the preparation technique. The catalysts were compared against an off-the-shelf catalyst. The in-house Pt catalyst afforded similar polarization curves as the commercial catalyst whereas the Pt-Co catalyst exhibited a slightly inferior performance. The suction-feed airbrush was deemed preferable because its produced cracked mud-like, homogeneous and smoother catalyst layers in contrast to the gravity-feed method, which resulted in poor-quality deposits with loose particles, lower Pt utilisation and higher resistance.
electrochemical hydrogen pump, fuel cell, hydrogen purification, membrane electrode assembly,, proton-exchange membrane
0360-3199
27392-27403
Arenas Martinez, Luis Fernando
6e7e3d10-2aab-4fc3-a6d4-63a6614d0403
Hadjigeorgiou, Georgios M.
21ab37d2-3556-45c8-aa1e-bb10dcb4f119
Jones, Simon
5cb59d9d-66b0-4424-bb1e-9bd4da14f4f7
Van Dijk, Nick
5051ee53-521c-4b4e-8f22-e8847fc17c76
Hodgson, David
070bce7b-8af2-433d-ac48-c54b42bcedd7
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c
Arenas Martinez, Luis Fernando
6e7e3d10-2aab-4fc3-a6d4-63a6614d0403
Hadjigeorgiou, Georgios M.
21ab37d2-3556-45c8-aa1e-bb10dcb4f119
Jones, Simon
5cb59d9d-66b0-4424-bb1e-9bd4da14f4f7
Van Dijk, Nick
5051ee53-521c-4b4e-8f22-e8847fc17c76
Hodgson, David
070bce7b-8af2-433d-ac48-c54b42bcedd7
Cruden, Andrew
ed709997-4402-49a7-9ad5-f4f3c62d29ab
Ponce De Leon Albarran, Carlos
508a312e-75ff-4bcb-9151-dacc424d755c

Arenas Martinez, Luis Fernando, Hadjigeorgiou, Georgios M., Jones, Simon, Van Dijk, Nick, Hodgson, David, Cruden, Andrew and Ponce De Leon Albarran, Carlos (2020) Effect of airbrush type on sprayed platinum and platinum-cobalt catalyst inks: benchmarking as PEMFC and performance in an electrochemical hydrogen pump. International Journal of Hydrogen Energy, 45 (51), 27392-27403. (doi:10.1016/j.ijhydene.2020.06.292).

Record type: Article

Abstract

Proton-exchange membrane fuel cells and electrochemical hydrogen pumps are based on membrane electrode assemblies containing Pt catalysts. During their preparation, a catalyst ink is usually applied to the gas diffusion layer. Among the available methods, ink spray using an airbrush can be advantageous for making small electrodes at universities and companies. This work compares the suitability of gravity-feed and suction-feed airbrushes during the evaluation of in-house developed Pt and Pt-Co catalysts. The surface morphology of the catalyst layers was analysed by SEM and EDS and related to the preparation technique. The catalysts were compared against an off-the-shelf catalyst. The in-house Pt catalyst afforded similar polarization curves as the commercial catalyst whereas the Pt-Co catalyst exhibited a slightly inferior performance. The suction-feed airbrush was deemed preferable because its produced cracked mud-like, homogeneous and smoother catalyst layers in contrast to the gravity-feed method, which resulted in poor-quality deposits with loose particles, lower Pt utilisation and higher resistance.

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Accepted Manuscript Arenas et al - Accepted Manuscript
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More information

Accepted/In Press date: 30 June 2020
e-pub ahead of print date: 17 September 2020
Published date: 16 October 2020
Additional Information: DoA requested
Keywords: electrochemical hydrogen pump, fuel cell, hydrogen purification, membrane electrode assembly,, proton-exchange membrane

Identifiers

Local EPrints ID: 442588
URI: http://eprints.soton.ac.uk/id/eprint/442588
ISSN: 0360-3199
PURE UUID: 05ffbf46-185e-40de-86d1-10555218205c
ORCID for Andrew Cruden: ORCID iD orcid.org/0000-0003-3236-2535
ORCID for Carlos Ponce De Leon Albarran: ORCID iD orcid.org/0000-0002-1907-5913

Catalogue record

Date deposited: 20 Jul 2020 16:35
Last modified: 30 Jun 2021 04:01

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Contributors

Author: Georgios M. Hadjigeorgiou
Author: Simon Jones
Author: Nick Van Dijk
Author: David Hodgson
Author: Andrew Cruden ORCID iD

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