▎ 摘　　要

NOVELTY - Preparation of porous vanadium (III) oxide-zinc titanate-reduced graphene oxide composite hydrogen storage material includes mixing potassium nitrate and graphite powder in concentrated sulfuric acid, adding potassium permanganate, mixing, adding deionized water, mixing, adding hydrogen peroxide, mixing, filtering solution, washing with dilute hydrochloric acid, drying to obtain graphene oxide, adding zinc acetate and tetrabutyl titanate to ethylene glycol, performing ultrasonic treatment to obtain mixed solution A, adding polyvinylpyrrolidone to ethylene glycol, performing ultrasonic treatment, adding concentrated ammonia solution, mixing to obtain mixed solution B, adding mixed solution B to mixed solution A, performing ultrasonic treatment, filtering precursor, washing with anhydrous ethanol, calcining to obtain zinc titanate with one-dimensional rod like porous structure, adding graphene oxide to deionized water and performing ultrasonic treatment. USE - The method is for preparation of porous vanadium (III) oxide-zinc titanate-reduced graphene oxide composite hydrogen storage material. ADVANTAGE - The lithium ion has large specific capacity and no risk of volume expansion/shrinkage. DETAILED DESCRIPTION - Preparation of porous vanadium (III) oxide-zinc titanate-reduced graphene oxide composite hydrogen storage material comprises adding potassium nitrate and graphite powder to concentrated sulfuric acid, mixing for 20-30 minutes under the condition of ice bath, adding potassium permanganate to solution, placing solution in 35-38 degrees C water bath, mixing for 2-3 hours, adding deionized water to mixed solution, mixing at 90-95 degrees C for 15-20 minutes, adding hydrogen peroxide to solution, mixing at room temperature, filtering solution, washing with dilute hydrochloric acid, centrifuging solution with deionized water until washing solution is neutral, drying sample in vacuum oven at 50-60 degrees C to obtain graphene oxide, adding zinc acetate and tetrabutyl titanate to ethylene glycol, performing ultrasonic treatment for 15-20 minutes to obtain mixed solution A, adding polyvinylpyrrolidone to ethylene glycol, performing ultrasonic treatment for 8-10 minutes, adding concentrated ammonia solution, mixing at room temperature for 50-60 minutes to obtain mixed solution B, adding mixed solution B to mixed solution A, performing ultrasonic treatment for 10-15 minutes, placing solution in water bath at 50-55 degrees C for 20-24 hours, filtering precursor, washing with anhydrous ethanol for three times, calcining in muffle furnace at 650 degrees C for 3 hours to obtain zinc titanate with one-dimensional rod like porous structure, adding graphene oxide to deionized water, performing ultrasonic treatment for 5-8 minutes, adding porous vanadium (III) oxide and zinc titanate to graphene oxide, performing ultrasonic treatment for 30-40 minutes to obtain mixed solution, adding hydrazine hydrate to mixed solution, reacting at 90-100 degrees C for 5-7 hours, cooling to room temperature and washing filtered product with anhydrous ethanol and deionized water for three times.