Patent ID: 6828263
Filing Date: 2004-12-07
Classification: C03C,H01M,Y02E

Abstract:
A method of sealing a fuel cell by adhering a glass composition thereto, the glass composition comprising a glass matrix having main components consisting of SiO2, Al2O3, and one or more compounds from the group consisting of group I metal oxides and group IIA metal oxides for sealing fuel cells operating at temperatures up to 1000Â° C., wherein a filler material is evenly dispersed in a powder used to form the glass matrix prior to firing, the filler material comprising particles of one or more compounds from the group: MgOâ€”MgAl2O4, stabilized zirconia, rare earth oxides, (Mg, Ca) SiO3, Mg2SiO4, MgSiO3, CaSiO3, CaZrO3, ThO2, TiO2 and MIIAlSi2O8, where MII=Ca2+, Sr2+ and/or Ba2+, and an alkali silicate.