Abstract
The phase change energy storage materials based on paraffin/nano-aluminum nitride were prepared in this study. The thermal stability of the composite materials was determined by differential scanning calorimeter, simultaneous thermogravimetry analysis-differential thermal analysis, and X-ray diffraction techniques. The results of differential scanning calorimeter and X-ray diffraction showed that the thermal performance and structure of the composite materials are stable. The change of latent heat is accredited for thermal energy storage. The thermogravimetry analysis-differential thermal analysis revealed that 3 wt% nano-aluminum nitride added into paraffin increases the flash point by at least 10°C.