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

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, Physik und Astronomie (insg.), 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)