Preparation method and application of novel aqueous zinc ion battery electrode material

The invention discloses a preparation method and application of a novel aqueous zinc ion battery electrode material. The preparation method comprises the following steps: (1) dissolving manganese salt, then mixing with a dispersing agent, and uniformly stirring to obtain a solution A; (2) adding a sodium source into the solution A for reaction to obtain MnCO3 precipitate; (3) centrifuging, washing, drying and calcining the MnCO3 precipitate to obtain porous Mn2O3 nanospheres or nanorod particles; and (4) uniformly mixing the porous Mn2O3 nanosphere or nanorod particles with sodium salt, and calcining to obtain the aqueous zinc ion battery electrode material. According to the application, the prepared electrode material is used as a positive electrode material of an aqueous zinc ion battery. The material prepared by the invention has the characteristics of a hollow cubic structure, and has the advantages of large specific surface area, good dispersity, good conductivity, stable structure and the like; the prep