NiCo alloy and nitrogen-doped graphene hierarchical pore aerogel as well as preparation method and application thereof in zinc-air battery

The invention provides a NiCo alloy and nitrogen-doped graphene hierarchical pore aerogel, a preparation method of the NiCo alloy and nitrogen-doped graphene hierarchical pore aerogel and application of the NiCo alloy and nitrogen-doped graphene hierarchical pore aerogel in a zinc-air battery. According to the method, firstly, K2Ni (CN) 4/K3Co (CN) 6-polydopamine-reduced graphene oxide hydrogel is prepared through a hydrothermal reaction, and the NiCo alloy and nitrogen-doped graphene hierarchical pore aerogel is obtained through drying and heat treatment. Chemical bonding between the NiCo alloy nanoparticles and the nitrogen-doped graphene aerogel improves the structural stability; niCo alloy is introduced to be inserted between graphene layers, nitrogen-doped graphene lamellas are supported and prevented from being seriously accumulated, and the mass transfer efficiency is improved by changing the alloy content and optimizing the pore size distribution of the NiCo alloy and nitrogen-doped graphene hierarchi