| abstract |
Solid oxide electrolysis cell (SOEC) stack obtainable by a process comprising the use of a glass sealant with composition 50 to 70 wt % SiO2, 0 to 20 wt%A12O3, 10 to 50 wt% CaO, 0 to 10wt%MgO, 0 to 2wt% (Na2o 1K2O), 0 to 10 wt% b2O3, and 0 to 5 wt% of functional elements selected from TiO2, ZrO2, ZrO2, F, P2O5, Mo03, FeO3, MnO 2, La-Sr-Mn-O perovskite (LSM) and combinations thereof. Prefeably, the sealant is a sheet of E-glass fibres with a composition in wt% of 52-56 SiO2, 12-16AL2O3, 16-25 CaO, 0-6MgO, 0-2 Na2+K2O, 0-10 B2O3, 0-1.5 TiO2, O-1F |