Advanced planar SOFC stack with improved thermo-mechanical reliability and electrochemical performance

Thermal cycle stability of SOFC stack was significantly improved with fracture-resistant unit cell with functionally graded structure and composite sealant with sufficient elasticity at high temperature. An array stack of extreme configuration was successfully fabricated using composite sealant with high temperature elasticity. And it was constructed in a two-layer arrayed stack where each layer consisted of two-dimensional assemblage of four 5 × 5 cm2 cells in 2 × 2 cell arrangement.