Journal Article

FZJ-2023-02351

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Self-Standing, Ultrasonic Spray-Deposited Membranes for Fuel Cells

Karaca, A. ; Galkina, I.FZJ*RWTH* ; Sohn, Y. J.FZJ* ; Wippermann, K.FZJ* ; Scheepers, F.FZJ* ; Glüsen, A. (Corresponding author)FZJ* ; Shviro, M. ; Müller, M.FZJ* ; Carmo, M. ; Stolten, D.FZJ*RWTH*

2023
MDPI Basel

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Please use a persistent id in citations: http://hdl.handle.net/2128/34552  doi:10.3390/membranes13050522

Abstract: The polymer electrolyte membrane and its contact with electrodes has a significant effect on the performance of fuel and electrolysis cells but the choice of commercially available membranes is limited. In this study, membranes for direct methanol fuel cells (DMFCs) were made by ultrasonic spray deposition from commercial Nafion solution; the effect of the drying temperature and presence of high boiling solvents on the membrane properties was then analyzed. When choosing suitable conditions, membranes with similar conductivity, water uptake, and higher crystallinity than comparable commercial membranes can be obtained. These show similar or superior performance in DMFC operation compared to commercial Nafion 115. Furthermore, they exhibit low permeability for hydrogen, which makes them attractive for electrolysis or hydrogen fuel cells. The findings from our work will allow for the adjustment of membrane properties to the specific requirements of fuel cells or water electrolysis, as well as the inclusion of additional functional components for composite membranes.

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Contributing Institute(s):

1. Elektrochemische Verfahrenstechnik (IEK-14)
2. Werkstoffsynthese und Herstellungsverfahren (IEK-1)
3. Technoökonomische Systemanalyse (IEK-3)

Research Program(s):

1. 1231 - Electrochemistry for Hydrogen (POF4-123) (POF4-123)
2. 1111 - Effective System Transformation Pathways (POF4-111) (POF4-111)

Appears in the scientific report 2023

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