Status of Light Weight Cassette Design of SOFC
The manufacturing of single parts, particularly due to the improved design of sheet metal interconnects, as well as the assembling processes are suitable for low-cost mass manufacturing. The novel decal concept of glass-ceramic sealant screen printed on foil in order to produce green tapes is used for joining the stack layers offering an enormous potential for cost savings in industrial assembly process. The new design CSV(D2.0 in the MMLCR=SOFC project) furthermore has extended the process window of the laser welding joining process.
First CSV–design stack tests showed a comparable electrochemical performance to the previous CSIV design. The good adhesion of the glass sealant applied on steel sheet by screen printed tape and good contacting behaviour between cells and interconnects were furthermore confirmed by post-test analysis.