10th International Conference on Composite Science and Technology ICCST/10 A.L. Araújo, J.R. Correia, C.M. Mota Soares, et al. (Editors) © IDMEC 2015 EFFECTS OF GRAPHENE NANOFILLERS ON THE ENERGY STORAGE PROPERTIES OF PARAFFIN-BASED PHASE CHANGE MATERIALS Abdalla I. Alrashdan * , Edreese H. Alsharaeh † * Alfaisal University, P.O.Box 50927, Riyadh, Saudi Arabia aalrshdan@alfaisal.edu † Alfaisal University, P.O.Box 50927, Riyadh, Saudi Arabia ealsharaeh@alfaisal.edu Key words: Phase change materials; Graphene; Paraffin wax; DSC; TGA Summary: This study is focused on the preparation, characterization, and determination of thermal properties of graphene nanofiller paraffin-based phase change materials (PCMs). Different PCM Samples with mass concentrations of 1, 5 and 10 wt. % of graphene were prepared. The phase change properties and thermal stabilities of the composite were investigated using differential scanning calorimetry (DSC) and thermogravimegric analysis (TGA), respectively. It was found that the incorporation of graphene to the paraffin-based phase change material increases its thermal stability while preserving its latent heat storage ability. This suggests that the graphene paraffin- based composite is a promising candidate to be used in high power thermal storage applications, including building heating and cooling and thermal management of electronic devices