▎ 摘　　要

NOVELTY - Preparing manganese(IV) oxide (MnO2)/reduced graphene oxide (rGO)/polyaniline (PANI)-aerogel comprises (1) uniformly mixing the graphene oxide dispersion and the manganese dioxide particles under a sealed condition, transferring to an autoclave, heating and reacting to obtain manganese(IV) oxide/graphene oxide (MnO2/GO) hydrogel, (2) immersing the MnO2/GO hydrogel obtained in step (1) into deionized water, adding a reducing agent, transferring the mixture to an autoclave, and heating to perform reduction reaction to obtain manganese(IV) oxide/ reduced graphene oxide (MnO2/rGO) hydrogel; and (3) adding the MnO2/rGO hydrogel obtained in step (2) to the mixed aqueous solution containing aniline monomer and hydrochloric acid, then adding the mixed aqueous solution of ammonium persulfate and hydrochloric acid, and polymerizing under the conditions of an ice water bath, washing the obtained sample, and vacuum drying to obtain the MnO2/rGO/PANI aerogel. USE - The aerogel is useful in aqueous zinc-ion battery (claimed). ADVANTAGE - The method: has simple operation, mild conditions, adjustable morphology, controllable structure, and uniform component distribution, and can used for batch or industrial production.