▎ 摘　　要

Ba(OH)(2) center dot 8H(2)O/graphene nanoplatelets composite phase change materials were prepared in this paper. It can be found that Ba(OH) 2 center dot 8H2Ois able to be dispersed evenly on the surface of graphene nanoplatelets by scanning electron microscope. Further, relevant tests showed that the thermal conductivity of composite phase change materials can be improved by graphene nanoplatelets. The thermal conductivity growth rate of the composite phase change material with 1.5 wt% graphene nanoplatelets is the largest, which is 51.36%. The melting and solidification thermal cycling tests of composite phase change materials with graphene nanoplatelets showed that the supercooling degree and the heat storage time of Ba(OH)(2) center dot 8H(2)Ocan be effectively reduced. According to the DSC tests, the melting point and the phase change enthalpy of Ba(OH)(2) center dot 8H(2)Ocomposite phase change materials are almost invariable after the graphene nanoplatelets is added. The excellent heat storage property is also maintained.