Boosting intermediate temperature performance of solid oxide fuel cells via a tri‐layer ceria–zirconia–ceria electrolyte

Using cost-effective fabrication methods to manufacture a high-performance solid oxide fuel cell (SOFC) is helpful enhance the commercial viability. Here, we report an anode-supported SOFC with three-layer Gd0.1Ce0.9O1.95 (gadolinia-doped-ceria [GDC])/Y0.148Zr0.852O1.926 (8YSZ)/GDC electrolyte system. The first dense GDC fabricated by co-sintering thin, screen-printed layer anode support (NiO–8YSZ substrate and NiO–GDC anode) at 1400°C for 5 h. Subsequently, two layers are deposited via physical vapor deposition. total thickness less than μm in area of × cm2, enabling area-specific ohmic resistance as low 0.125 Ω cm−2 500°C (under open circuit voltage), contributing power density high 1.2 W 650°C (at operating voltage 0.7 V, using humidified [10 vol.% H2O] H2 air oxidant). This work provides effective strategy shows great potential intermediate temperature.