Enhancement of Thermal Conductivity of Phase Change Materials by 3D Graphene @ Al2O3 foams

Al2O3 coated graphene foam (GF@Al2O3) composites are proposed by depositing insulating Al2O3 particles on the graphene with a simple method. The content of Al2O3 on graphene could be gradually adjusted by changing Al(OH)3 radio in solution. Al2O3 coated graphene foam composites are used as effective three dimension (3D) interconnected framework of paraffin phase change materials to increase thermal conductive and high electrical resistance. The GF@Al2O3 provides enormous thermal conductive pathways for heat transfer, suitable for application as thermal interface materials (TIMs). © 2016 IEEE.