Enhancing the Lifetime of Solid Oxide Fuel Cell stacks in Switzerland
Auf einen Blick
- Projektleiter/in : Prof. Thomas Hocker
- Co-Projektleiter/in : Dr. Lorenz Holzer
- Projektstatus : abgeschlossen
- Drittmittelgeber : Bund (Bundesamt für Energie BFE)
- Projektpartner : Hexis AG
- Kontaktperson : Lorenz Holzer
Beschreibung
The lifetime of Solid Oxide Fuel Cell Stacks was investigated by
means of experimental investigations (e.g. Impedance spectroscopy,
physical/electrochemical characterization), microstructure analysis
(SEM, FIB-tomography, EDX) and numerical simulation (Finite Element
Modelling).
A particular focus of the investigations was on the effect of
microstructure degradation of Ni-based cermet anodes (e.g.
Ni-coarsening) in context with temperature variations and redox
cycling. Quantitative relationships between microstructure
characteristics (phase volume fractions, tortuosity,
constrictivity) and effective properties (electric and ionic
conductivity, gas diffusivity) could be elaborated. Based on the
fundamental understanding of microstructure-property relationships
new anodes with improved long-term performance could be
developed.