Materials and processing for high performance solid oxide fuel cells with long-term durability
|Robert Mücke 1, Norbert H. Menzler 1, Sven Uhlenbruck , Hans Peter Buchkremer , Detlev Stoever|
1. Forschungszentrum Jülich, Institute of Energy Research IEF (FZJ-IEF), Leo-Brandt-Strasse, Jülich 52425, Germany
Solid oxide fuel cells (SOFC) were enhanced at Forschungszentrum Jülich the last five years to yield higher performance and better long-term stability. This development includes all facets of material science: the materials themselves (e.g. Fe perovskite cathodes); the processing of applied layers in terms of their thickness, paste/suspension parameters, and sintering regime; the adaptation of microstructure (porosity, particle sizes); and the combination of different material interfaces in the cell and the stack. The newest generation of cells yield approx. 900 mW/cm² at an operating temperature as low as 700°C (H2/3%H2O, air, 0.7 V) in single cell tests. In a stack the performance is still approx. 700 mW/cm² at the same operating conditions, whereas the slight decrease is owed to losses in the cell-interconnect interface.
Presentation: Oral at E-MRS Fall Meeting 2009, Symposium G, by Robert Mücke
See On-line Journal of E-MRS Fall Meeting 2009
Submitted: 2009-05-11 13:25 Revised: 2009-06-07 00:48