Preparation and Thermal Characterization of Nanographene- Enhanced Fatty Acid-Based Solid-Liquid Organic Phase Change Material Composites for Thermal Energy Storage

In this research work, nano-phase change material (NPCM) composites were prepared by adding 1 %, 2 and 3 % mass fractions of highly conductive carbon-based graphene nanoparticles into the base phase (PCM). The existence uniform dispersion in PCM was confirmed through Raman spectrometer scanning electron microscope (SEM) analysis. Fourier transform infrared (FTIR) x-Ray diffraction (XRD) results showed that all three NPCM chemically stable, their crystallinity similar to PCM. For sample with graphene, solid-state thermal conductivity increased 219.89 liquid-state 161.65 a 3.52 drop latent heat capacity revealed from differential calorimetry (DSC) All have onset peak melting temperatures closer Hence, can be employed for energy storage (TES) integrated solar water heater (SWH) applications.