Engineering efficient bifunctional electrocatalysts for rechargeable zinc–air batteries by confining Fe–Co–Ni nanoalloys in nitrogen-doped carbon nanotube@nanosheet frameworks

Fe–Co–Ni nanoalloys embedded in nitrogen-doped carbon nanotube@nanosheet frameworks (FeCoNi-NC) is prepared as excellent bifunctional ORR/OER electrocatalyst, which is confirmed by experimental observations and theoretical calculations.