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).