This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1016/j.elecom.2019.106640 in citations.
Please use the identifier: http://hdl.handle.net/2128/23854 in citations.
Directly coated membrane electrode assemblies for proton exchange membrane water electrolysis
Directly coated membrane electrode assemblies for proton exchange membrane water electrolysis
We present a novel membrane electrode assembly (MEA) fabrication method for proton exchange membrane water electrolysis (PEMWE). Inspired by previous work on PEM fuel cells (PEMFCs), we fabricated PEMWE-MEAs via direct membrane deposition (DMD). DMD-MEAs were fabricated by spray coating the membrane...
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Personal Name(s): | Holzapfel, Peter |
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Bühler, Melanie / Van Pham, Chuyen / Hegge, Friedemann / Böhm, Thomas / McLaughlin, David / Breitwieser, Matthias / Thiele, Simon (Corresponding author) | |
Contributing Institute: |
Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien; IEK-11 |
Published in: | Electrochemistry communications, 110 (2020) S. 106640 - |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2020
|
DOI: |
10.1016/j.elecom.2019.106640 |
Document Type: |
Journal Article |
Research Program: |
Methods and Concepts for Material Development |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/23854 in citations.
We present a novel membrane electrode assembly (MEA) fabrication method for proton exchange membrane water electrolysis (PEMWE). Inspired by previous work on PEM fuel cells (PEMFCs), we fabricated PEMWE-MEAs via direct membrane deposition (DMD). DMD-MEAs were fabricated by spray coating the membrane directly onto the cathode electrode – in this case, a carbon cloth substrate with microporous layer coated with Pt/C. The complete DMD-MEAs consisted of the membrane-cathode compound assembled with an anode electrode, which is a porous titanium fiber substrate coated with IrO2. Polarization experiments of DMD-MEAs show promising results: In comparison to a reference catalyst coated membrane (CCM) and a porous transport electrode (PTE) type MEA using a freestanding Nafion 117 membrane, we found very good electrochemical performances for DMD-MEAs. DMD-MEAs show slightly higher activation losses than the reference CCM. However, DMD-MEAs seem to exhibit reduced ohmic and mass transport losses compared to those manufactured using the CCM approach. Compared to the PTE-type reference DMD shows improvements for all three loss mechanisms. Similar as for PEMFCs, DMD may allow for a simplified fabrication route and higher degree of design freedom in PEMWE-MEA manufacturing due to the simple layer by layer fabrication approach. |