Preparation method for zinc manganate negative electrode material

A method for preparing a zinc manganate anode material, comprising the following steps:

• (1) preparing a solution A containing a manganese ion and a solution B;
• (2) dispersing an adsorption carrier into the solution B;
• (3) using an alkali solution as a base solution and adding the solution A, the solution B and an oxidant solution to the base solution while stirring;
• (4) conducting a solid-liquid separation on a material after reaction to obtain a solid;
• and
• (5) washing, drying and calcining the solid to obtain the zinc manganate anode material;
• wherein in step (1), the solution A further contains a silver ion, and the solution B is a mixed solution of sodium tetrahydroxozincate and sodium hydroxide;
• wherein in step (2), the adsorption carrier is cotton fiber;
• wherein in step (3), a reaction vessel used for the stirring is provided with an overflow pipe and connected with a collection tank through the overflow pipe;
• wherein in step (5), the calcining comprises:
• heating the solid after drying to 250° C. to 300° C. at a heating rate of 1° C./min to 3° C./min for 1 h to 2 h, then heating the solid to 500° C. to 600° C. at a heating rate of 2° C./min to 5° C./min for 2 h to 4 h.