期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 44, 期 14, 页码 7053-7058出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.02.016
关键词
PEM water electrolysis; CC-MEA; Completely slot die coated MEA; Direct membrane deposition
资金
- Bavarian Ministry of Economic Affairs and Media, Energy and Technology within the framework of the Helmholtz Institute Erlangen-Nurnberg for Renewable Energy of Forschungszentrum Pinch [IEK-11]
This work shows how to manufacture completely coated membrane electrode assemblies (CC-MEAs) for PEM water electrolysis by only using a slot die. Platinum, Nafion (R), and IrO2 dispersions are successively coated to the respective dried layer. For comparison reasons, MEAs with the same Iridium loading of 2.1 mg cm(-2) and Platinum loading of 0.4 mg cm(-2), assembled with a commercial membrane of the same 20 mu m thickness, were produced via decal method. Differences in polarization curves are attributed to the lower high frequency resistance of CC-MEAs determined by impedance spectroscopy. The easy-to-scale CC-MEA method presented here offers the advantages of direct membrane deposition (DMD) without the challenge of homogenously coating a porous transport layer (PTL). Therefore, it allows a free choice of different PTLs - regardless if in sintered form or as expanded metal. The comparability between the produced CC-MEAs and published DMD results is shown by means of cross-sectional and electrochemical measurements. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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