Bifunctional porous positive electrode material for electrocatalytic nitrogen reduction and electrocatalytic hydrogen oxidation, battery comprising same, and preparation method and application of bifunctional porous positive electrode material

The invention discloses a bifunctional porous positive electrode material with electro-catalysis nitrogen reduction and electro-catalysis hydrogen oxidation, a Li-N2/H2 battery comprising the same, and a preparation method and application of the bifunctional porous positive electrode material. The preparation method of the porous positive electrode material comprises the following steps: S1, adding a metal salt precursor with a certain concentration into a beaker as an electro-deposition solution; s2, the porous metal of the electro-deposition substrate serves as a working electrode, a platinum wire serves as a counter electrode, silver/silver chloride serves as a reference electrode, and electro-deposition is conducted with certain constant-potential electro-deposition parameters; and S3, after the electro-deposition is finished, cleaning and drying to obtain the difunctional porous positive electrode material. The bifunctional porous positive electrode material with electro-catalysis nitrogen reduction and