▎ 摘　　要

NOVELTY - Producing superelastic magnetocaloric three-dimensional graphene stent composite material, comprises (a) adding graphene oxide into deionized water and ultrasonically dispersing to obtain aqueous graphene oxide solution, (b) adding magnetic iron oxide nanoparticles into aqueous graphene oxide solution, and ultrasonically dispersing to obtain a first mixed solution, (c) adding ethylenediamine as reducing agent into the first mixed solution, and ultrasonically dispersing to obtain a second mixed solution, (d) introducing the second mixed solution into a reaction kettle, and heating at 100-140 degrees C for 2-6 hours to obtain graphene hydrogel, (e) dialyzing graphene hydrogel in a dialysate to remove reducing agent and by-products to obtain a purified graphene hydrogel, and (f) freeze-drying the purified graphene hydrogel to obtain composite material. USE - Used as superelastic magnetocaloric three-dimensional graphene stent composite material. ADVANTAGE - The composite material has high elasticity, good magnetic and magnetocaloric heating effect characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for superelastic magnetocaloric three-dimensional graphene stent composite material produced by the above method.