▎ 摘　　要

NOVELTY - Modifying three-dimensional graphene-limited high-capacity hydrogen storage material involves dissolving ferric nitrate or other metal nitrate and polyvinylpyrrolidone in de-ionized water to prepare mixed solution, drying in blasting drying cabinet and then grinding into powder to obtain powder and placing into tubular furnace, pre-sintering for one or two times followed by heat treatment to obtain black foam-like product which is modified three-dimensional porous iron-based catalyst nitrogen-doped graphene composite material and compounding with hydrogen storage alloy to obtain desired product. USE - Method for modifying three-dimensional graphene-limited high-capacity hydrogen storage material by iron-based catalyst. ADVANTAGE - The method enables to modify three-dimensional graphene-limited high-capacity hydrogen storage material in cost effective manner which has good industrialization in hydrogen storage field, short production period and strong repeatability.