Multiscale-Multiphysics Model for Optimization of Novel Ceramic MIEC Solid Oxide Fuel Cell Electrodes

Authors

  • Philip Marmet, Lorenz Holzer, Thomas Hocker, Holger Bausinger, Jan G. Grolig, Andreas Mai, Joseph M. Brader, Gernot K. Boiger

Abstract

To significantly improve on the unavoidable degradation of state-of-the-art Solid oxide fuel cell (SOFC) anodes like Ni-YSZ, we elaborate on fully ceramic composite electrodes, which are based on mixed ionic and electronic conductors (MIEC) like doped ceria and perovskite materials. Thereby, a Digital Materials Design (DMD) framework is used for the systematic and model-based optimization of MIEC SOFC-electrodes. In our DMD approach we combine experimental methods, stochastic microstructure modeling, virtual testing of 3D microstructures and a multiscale-multiphysics electrode model. The electrode model developed in this contribution captures all the relevant physico-chemical processes involved like the transport of charge carriers in the two MIEC solid phases, transport of the gas species in the pore-phase and the reaction kinetics. A special emphasize is laid to the appropriate description of the microstructure effects, applying the previously reported DMD-methodologies. This model-based performance prediction enables to explore a much larger design space than it would be possible with experimental methods only.

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Published

2024-06-14

How to Cite

Marmet, P. . (2024) “Multiscale-Multiphysics Model for Optimization of Novel Ceramic MIEC Solid Oxide Fuel Cell Electrodes”, The International Journal of Multiphysics, 18(2s), pp. 58 - 83. Available at: https://www.themultiphysicsjournal.com/index.php/ijm/article/view/953 (Accessed: 22July2024).

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