A/B-Site Dual Doping of YbFeO3-Based Orthorhombic Perovskites for Activity-Stability Balanced Air Electrodes in Reversible Solid Oxide Fuel Cells.
Reversible solid oxide fuel cells (RSOCs) require air electrodes that are active for both oxygen reduction and oxygen evolution reactions while resisting degradation under operating conditions. YbFeO3 (YbFO) offers a robust orthorhombic perovskite framework with moderate thermal expansion, but its intrinsic electrode a...