Membrane Interlayer with Pt Recombination Particles for Reduction of the Anodic Hydrogen Content in PEM Water Electrolysis

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Klose, C. et al.: Membrane Interlayer with Pt Recombination Particles for Reduction of the Anodic Hydrogen Content in PEM Water Electrolysis. In: Journal of the Electrochemical Society 165 (2018), Nr. 16, S, F1271-F1277. DOI: https://doi.org/10.1149/2.1241814jes

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Sum total of downloads: 294




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Abstract: 
Polymer electrolyte membrane (PEM) water electrolysis is a key technology for sustainable hydrogen based energy supply. Gas permeation through the PEM leads to hydrogen in oxygen at the anode side posing a safety hazard and therefore restricting the operation window of PEM water electrolysis, especially when operating under pressure. In this work the hydrogen in oxygen content at the anode is significantly reduced when a recombination interlayer is integrated into the membrane electrode assemblies (MEAs) compared to reference MEAs without interlayer. The recombination interlayer with a platinum loading of 0.02 mg cm(-2) is sprayed between two membranes that are coated with anode and cathode catalysts on the outside. The permeating H-2 and O-2 forms water at the recombination interlayer, leading to higher gas purity and resolving safety issues. In case of the MEAs with interlayer also a constant current hold at 1 A cm(-2) for 245 h revealed only a slight increase of the hydrogen in oxygen content (below 140.10(-6) vol.% h(-1)) whereas for the reference MEAs without interlayer a stronger increase was observed (above 1250.10-6 vol.% h(-1)). Furthermore, the long-term experiments showed no increased degradation rates compared to the reference MEAs.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2018
Appears in Collections:Fakultät für Elektrotechnik und Informatik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 161 54.76%
2 image of flag of United States United States 59 20.07%
3 image of flag of China China 13 4.42%
4 image of flag of Israel Israel 9 3.06%
5 image of flag of Philippines Philippines 8 2.72%
6 image of flag of Japan Japan 6 2.04%
7 image of flag of United Kingdom United Kingdom 6 2.04%
8 image of flag of Russian Federation Russian Federation 5 1.70%
9 image of flag of Korea, Republic of Korea, Republic of 5 1.70%
10 image of flag of Turkey Turkey 3 1.02%
    other countries 19 6.46%

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