▎ 摘　　要

NOVELTY - Preparing three-dimensional high heat-conducting attapulgite/graphene oxide aerogel composite phase-change material comprises (i) dissociating the attapulgite cluster into attapulgite nano fiber by acid activation treatment; (ii) mixing and stirring the attapulgite nano fiber, silane coupling agent and ethanol to obtain aminated attapulgite nano fiber; (iii) mixing the graphene oxide nanosheets, microfibrillated cellulose, and deionized water to form a uniform graphene oxide suspension; (iv) adding the aminated attapulgite nano fiber into the uniform graphene oxide suspension, mixing and stirring to obtain uniform dispersion liquid and subjecting to hydrothermal reaction to prepare attapulgite/graphene oxide hydrogel with three-dimensional structure; (v) freezing the attapulgite/graphene oxide hydrogel in a freeze dryer to obtain the attapulgite/graphene oxide aerogel; and (vi) performing vacuum impregnation of the attapulgite/graphene oxide aerogel and phase change material. USE - The method is useful for preparing three-dimensional high heat-conducting attapulgite/graphene oxide aerogel composite phase-change material. ADVANTAGE - The method prepares composite phase change material: can realize extremely high energy storage density; and has excellent leakage prevention performance and good thermal conductivity. DETAILED DESCRIPTION - Preparing three-dimensional high heat-conducting attapulgite/graphene oxide aerogel composite phase-change material comprises (i) dissociating the attapulgite cluster into attapulgite nano fiber by acid activation treatment; (ii) mixing and stirring the attapulgite nano fiber, silane coupling agent and ethanol to obtain aminated attapulgite nano fiber; (iii) mixing the graphene oxide nanosheets, microfibrillated cellulose, and deionized water to form a uniform graphene oxide suspension; (iv) adding the aminated attapulgite nano fiber into the uniform graphene oxide suspension, mixing and stirring to obtain uniform dispersion liquid and subjecting to hydrothermal reaction to prepare attapulgite/graphene oxide hydrogel with three-dimensional structure; (v) freezing the attapulgite/graphene oxide hydrogel in a freeze dryer to obtain the attapulgite/graphene oxide aerogel; and (vi) performing vacuum impregnation of the attapulgite/graphene oxide aerogel and phase change material, where the step (ii) and step (iii) have no sequence. An INDEPENDENT CLAIM is also included for three-dimensional high heat-conducting attapulgite/graphene oxide aerogel composite phase-change material, prepared as mentioned above.