HIGH-TEMPERATURE SEALANT FOR SOLID OXIDE FUEL CELLS Russian patent published in 2024 - IPC C03C8/24 C03C3/62 H01M8/10 

FIELD: fuel industry.

SUBSTANCE: invention relates to compositions of high-temperature sealants and can be used for tight connection of dissimilar components of solid oxide fuel cells (SOFC) at temperature of 920–980 °C for long-term operation in temperature range of 800–900 °C. High-temperature sealant contains, they say: %: SiO₂—40–50, BaO—16–27, CaO—15–25, B₂O₃—10–18, Al₂O₃—2–10.

EFFECT: high adhesion to ZrO₂ electrolyte and to steel switching components, thermomechanical compatibility of the proposed composition with SOFC components, as well as a combination of softening temperatures and viscosity at gluing temperature, providing tight sealing of SOFC without spreading of sealant.

1 cl, 2 dwg