Rechargeable zinc–air batteries (RZABs) are basically dependent on both affordable and long-lasting bifunctional electrocatalysts. A non-precious metal catalyst, a FeNi nanoalloy catalyst (FeNi@NC) with an extremely low consumption (0.06 mmol), has been successfully synthesized. It shows high half-wave potential of 0.845 V vs. RHE for ORR overpotential 318 mV OER at 10 mA cm−2, favoring maximum...

Solid oxide cells (SOCs) including solid fuel (SOFCs) and electrolysis (SOECs) are advanced electrochemical energy storage conversion devices. However, the lack of highly active stable electrode materials impedes their practical applications. Herein, in-situ exsolved CoFe nanoparticles on perovskite matrixes with abundant defects developed as bifunctional electrocatalysts for SOCs from Sr2FeMo1...