The group has a wide experience in sealing glasses and glass-ceramics for ceramic and metallic components of very different nature and in applications that go from room temperature use to very high temperatures and extreme atmospheres.
One major challenges for the commercialization of planar solid oxide cells (SOFC) is the development of sealing materials suitable for separating the anode and cathode chambers and maintaining the gas-tightness of the system at high temperatures, 600-1000ºC. A promising combination of physical-chemical properties was obtained in RO-BaO/SrO-SiO2 systems where R= Mg and Zn. The developed glass-ceramics have shown a suitable thermo-mechanical behaviour together with a high long-term chemical stability.
4 Layers SOFC stack (FZ-Jülich) sealed with 10B(Sr) glass-ceramic