Thermal properties of the three-dimensional graphene/paraffin nanocomposite phase change materials

The excellent properties of graphene phase change nanocomposite made it have potential application value in the field heat storage materials, which was expected to achieve integration transfer and storage. In order enhance thermal performance paraffin energy storage, structure models n-octadecane three kinds graphene/n-octadecane composites were established. Molecular dynamics method used study variation thermophysical properties. It is found that strong interaction between noctadecane restricts diffusion intensity molecules, reflects decreasing trend self-diffusion coefficient. addition, conductivity each system solid state higher than liquid, abruptly drops near melting point. composite PCM always pure increases with amount graphene.