Details
| Original language | English |
|---|---|
| Article number | 234987 |
| Journal | Journal of power sources |
| Volume | 614 |
| Early online date | 6 Jul 2024 |
| Publication status | Published - 15 Sept 2024 |
Abstract
Ensuring the long-term mechanical durability of perfluorosulfonic acid membranes in proton exchange membrane water electrolysis (PEMWE) is essential for long lifetimes. This study investigates the potential of reinforcing the membrane by incorporating a subgasket layer outside the active area. Thus, experimental tensile measurements with the subgasket material and with the subgasket-membrane composite are conducted to characterize their mechanical properties. The obtained data are used to identify suitable material models and parameterize them by applying a tensile test simulation based on the finite element method. By integrating subgaskets in a structural mechanics PEMWE cell model, the impact of the reinforcement on the membrane stability was investigated. The results indicate that even thin layers of subgaskets stabilize the membrane at the gap interface between the cell frame and the porous transport layer. The level of stabilization is further enhanced when using thicker subgaskets that cover the entire gap. However, one-sided subgaskets exhibit reduced mechanical stabilization. Furthermore, membrane buckling due to an increased gap size can be prevented using a subgasket up to a maximum gap size of 0.45 mm.
Keywords
- Membrane, Proton exchange membrane water electrolysis, Structural mechanics investigation, Subgasket
ASJC Scopus subject areas
- Energy(all)
- Renewable Energy, Sustainability and the Environment
- Energy(all)
- Energy Engineering and Power Technology
- Chemistry(all)
- Physical and Theoretical Chemistry
- Engineering(all)
- Electrical and Electronic Engineering
Sustainable Development Goals
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In: Journal of power sources, Vol. 614, 234987, 15.09.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Reinforcing membranes with subgaskets in proton exchange membrane water electrolysis
T2 - A model-based analysis
AU - Kink, Julian
AU - Suermann, Michel
AU - Ise, Martin
AU - Bensmann, Boris
AU - Junker, Philipp
AU - Hanke-Rauschenbach, Richard
N1 - Publisher Copyright: © 2024 The Authors
PY - 2024/9/15
Y1 - 2024/9/15
N2 - Ensuring the long-term mechanical durability of perfluorosulfonic acid membranes in proton exchange membrane water electrolysis (PEMWE) is essential for long lifetimes. This study investigates the potential of reinforcing the membrane by incorporating a subgasket layer outside the active area. Thus, experimental tensile measurements with the subgasket material and with the subgasket-membrane composite are conducted to characterize their mechanical properties. The obtained data are used to identify suitable material models and parameterize them by applying a tensile test simulation based on the finite element method. By integrating subgaskets in a structural mechanics PEMWE cell model, the impact of the reinforcement on the membrane stability was investigated. The results indicate that even thin layers of subgaskets stabilize the membrane at the gap interface between the cell frame and the porous transport layer. The level of stabilization is further enhanced when using thicker subgaskets that cover the entire gap. However, one-sided subgaskets exhibit reduced mechanical stabilization. Furthermore, membrane buckling due to an increased gap size can be prevented using a subgasket up to a maximum gap size of 0.45 mm.
AB - Ensuring the long-term mechanical durability of perfluorosulfonic acid membranes in proton exchange membrane water electrolysis (PEMWE) is essential for long lifetimes. This study investigates the potential of reinforcing the membrane by incorporating a subgasket layer outside the active area. Thus, experimental tensile measurements with the subgasket material and with the subgasket-membrane composite are conducted to characterize their mechanical properties. The obtained data are used to identify suitable material models and parameterize them by applying a tensile test simulation based on the finite element method. By integrating subgaskets in a structural mechanics PEMWE cell model, the impact of the reinforcement on the membrane stability was investigated. The results indicate that even thin layers of subgaskets stabilize the membrane at the gap interface between the cell frame and the porous transport layer. The level of stabilization is further enhanced when using thicker subgaskets that cover the entire gap. However, one-sided subgaskets exhibit reduced mechanical stabilization. Furthermore, membrane buckling due to an increased gap size can be prevented using a subgasket up to a maximum gap size of 0.45 mm.
KW - Membrane
KW - Proton exchange membrane water electrolysis
KW - Structural mechanics investigation
KW - Subgasket
UR - http://www.scopus.com/inward/record.url?scp=85197606329&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2024.234987
DO - 10.1016/j.jpowsour.2024.234987
M3 - Article
AN - SCOPUS:85197606329
VL - 614
JO - Journal of power sources
JF - Journal of power sources
SN - 0378-7753
M1 - 234987
ER -