Reduction of degradation of electrolyte supported SOFC solid oxide fuel cells
At a glance
In autumn 2013, the industrial partner Hexis has started the
pilot market launch of the combined fuel cell heating device
Galileo 1000 N. Keeping the stack power degradation as low as
possible while achieving stack lifetimes above 40’000 h was one of
the major challenges. Therefore, the focus of the SOF-CH ESC
project was on determining and reducing the main causes of
degradation, in order to increase the lifetime of SOFCs.
One of the work packages of the project aimed at achieving a better understanding of the degradation mechanism which reduces the ionic conductivity of the electrolyte. Using x-ray diffraction (XRD) methods, procedures were developed to investigate ageing in-situ and ex-situ, as well as spatially resolved, and to improve understanding of this process.