Patents
The present invention provides a novel alkali and barium-free NiU containing boro-silicate phosphate (P205)-based glass compositions for solid oxide file1 cell (SOFC) having (mol% of) 20-26 CaO, 20-26 SrO, 3-10 B203,3 4-42 SiO2, 1-5 P20s, 1-5 AI2o3, 1-4 i 0 2 , l - 5N iO, .. 2-4 La203 and 1-3 Ce02 and a process for the preparation thereof. The invented glasses are well suited for use with the SOFC stack components having the CTE value of 9.85 to 12.22 x I oy6/1<. In addition, these glasses .exhibit thermally cyclability when they are being tested in 25°C -800°C -25OC temperature regions. It is also found that these thermally cyclable glasses are thermally stable up to 1,000 h. These glasses have the capability to reduce the reaction with the intermediate temperature SOFC components since the glass compositions are alkali and barium-free. Moreover, the glass compositions are equally useable in Solid Oxide Electrolyzer Cell (SOEC).