Macroscopic properties of solid oxide fuel cell electrodes via microstructure‐based numerical homogenization

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

Abstract

Due to climate change, sustainable and energy‐efficient power supply is urgently required. To increase the performance of solid oxide fuel cells, the effects of the microstructure of their porous electrodes need to be studied. Therefore, real tomography images are used to (i) characterize specific geometrical features such as the two‐point correlation function or the tortuosity and (ii) determine the effective conductivities (thermal, ionic, electronic) and the effective permeability. The temperature‐dependent and anisotropic physical properties based on the first‐order homogenization method are described by the dissipation potential. The results can be used in macroscopic fuel cell simulations to bridge the gap between the micro and macro scale and to gain a better understanding of which characteristics of electrode microstructures are favorable for higher efficiency.

Details

OriginalspracheEnglisch
Aufsatznummere202400023
FachzeitschriftProceedings in Applied Mathematics and Mechanics: PAMM
Jahrgang24
Ausgabenummer4
Frühes Online-Datum21 Okt. 2024
PublikationsstatusVeröffentlicht - Dez. 2024
Peer-Review-StatusJa

Externe IDs

unpaywall 10.1002/pamm.202400023
Mendeley f234627c-9efb-38de-9e5a-215f9f7fbaec

Schlagworte