Electro-chemo-mechanical induced fracture modeling in proton exchange membrane water electrolysis for sustainable hydrogen production
- verfasst von
- Fadi Aldakheel, Chaitanya Kandekar, Boris Bensmann, Hüsnü Dal, Richard Hanke-Rauschenbach
- Abstract
This work provides a framework for predicting fracture of catalyst coated membrane (CCM) due to coupled electro-chemo-mechanical degradation processes in proton exchange membrane water electrolysis (PEMWE) cells. Electrolysis in the catalyst layer (CL) bulk, diffusion of Hydrogen proton through the membrane (MEM), and mechanical compression at the interface with the porous transport layer (PTL) generate micro-cracks that influence the catalyst degradation. Based on our experimental observations, we propose a new theoretical formulations along with the constitutive framework to help understanding and providing a reliable description of the stated multi-physics problem. The computational modeling of crack formation in the CL bulk is achieved in a convenient way by continuum phase-field formulations to fracture, which are based on the regularization of sharp crack discontinuities. The model performance is demonstrated through two representative boundary value problems, representing the cell setup and working of the PEMWE cell.
- Organisationseinheit(en)
-
Institut für Kontinuumsmechanik
Institut für Elektrische Energiesysteme
Fachgebiet Elektrische Energiespeichersysteme
- Externe Organisation(en)
-
Helmut-Schmidt-Universität/Universität der Bundeswehr Hamburg
Orta Dogu Technical University
- Typ
- Artikel
- Journal
- Computer Methods in Applied Mechanics and Engineering
- Band
- 400
- ISSN
- 0045-7825
- Publikationsdatum
- 01.10.2022
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Numerische Mechanik, Werkstoffmechanik, Maschinenbau, Allgemeine Physik und Astronomie, Angewandte Informatik
- Ziele für nachhaltige Entwicklung
- SDG 7 – Erschwingliche und saubere Energie
- Elektronische Version(en)
-
https://doi.org/10.1016/j.cma.2022.115580 (Zugang:
Geschlossen)