FeNi Confined in N-Doped Carbon as a Highly Efficient Bi-Functional Catalyst for Rechargeable Zn–Air Batteries

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 power density 116 mW cm−2 the constructed RZABs. The voltage plateau is reserved even after 167 h cell operation. synergistic effect between nano-sized alloy nitrogen-doped carbon abundant N sites mainly contributes to electrocatalytic activity. This research can provide some useful guidelines development economic efficient catalysts