▎ 摘　　要

NOVELTY - Composite phase change nanofiber material is polyethylene glycol, supporting material is polyvinylpyrrolidone, and heat conducting material is graphene oxide. USE - Composite phase change nanofiber material. ADVANTAGE - The composite phase change nanofiber material has simple proces, easy to adjust process parameter, improved thermal conductivity, and effectively prevents leakage during solid-liquid phase transition. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a composite phase change nanofiber material, which involves: (A) preparing graphene oxide by Hummers method, dissolving graphene oxide in N,N-dimethylformamide, and performing ultrasonic reaction so that it is completely dissolve to obtain a solution; (B) preparing an electrospinning solution by adding polyvinylpyrrolidone and polyethylene glycol in the solution, and stirring it under certain conditions so that it is completely dissolved; and (C) carrying out high-voltage electrospinning by electrospinning the mixed solution at room temperature, and placing composite phase-change nanofiber material in an oven to completely volatilize N,N-dimethylformamide to obtain final product.