The BaCe0.16Y0.04Fe0.8O3−δ nanocomposite: a new high-performance cobalt-free triple-conducting cathode for protonic ceramic fuel cells operating at reduced temperatures

BaCe 0.16 Y 0.04 Fe 0.8 O 3− δ nanocomposite cathode exhibits excellent activity and stability for ORR in PCFCs due to the strong interaction between phase components, optimized dual-phase composition and well-balanced proton and oxygen ion conductivity.