▎ 摘　　要

NOVELTY - Preparing graphene-based zeolitic imidazolate framework-67 (ZIF-67) hydrogel material comprises (1) dissolving and dispersing cobalt chloride and polyvinyl pyrrolidone in methanol to obtain solution A, dissolving the 2-methyl imidazole in methanol to obtain transparent B solution, adding solution B into the solution A, fully and vigorously stirring, and aging, (2) centrifuging the aged reaction liquid, washing with methanol for many times to obtain precipitate, removing impurities, and drying, (3) adding the polyethylene pyrrolidone modified ZIF-67 into graphene solution, ultrasonically stirring, centrifuging, and collecting the solution, and (4) adding sodium ascorbate solution, performing chemical reduction reaction at a certain temperature for a period of time, washing the composite precursor, and drying to obtain target product. USE - The graphene-based zeolitic imidazolate framework-67 hydrogel material is useful in lithium-ion batteries (claimed). ADVANTAGE - The method is environmentally friendly, has simple preparation process, is easy to operate, and is convenient for industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene-based zeolitic imidazolate framework-67 hydrogel material