Molten-salt engineering creates layered Fe–N–C catalysts. (IMAGE)
Caption
Molten-salt engineering creates layered Fe–N–C catalysts. The schematic shows how Fe-doped zeolitic imidazolate framework-8 (Fe-ZIF-8) is encapsulated by a potassium chloride/zinc chloride (KCl/ZnCl₂) eutectic salt mixture and converted through pyrolysis into layered Fe–N–C nanosheets. This molten-salt-assisted transformation exposes more single-atom iron sites and promotes axially coordinated Fe-N₅ structures, enabling efficient oxygen reduction reaction (ORR) performance for zinc–air batteries.
Credit
Liqiu Liu, et al.
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