International Journal of Energy Research · 2019 · 32 citations · 48 references
EngineeringNanoporous MaterialMechanical EngineeringCopper-doped Polyethylene GlycolThermal Energy StorageThermal ConductivityChemical EngineeringEnhanced Thermal ConductivityThermal ConductionMaterials ScienceHollow CavitiesEnergy StorageHeat TransferPhase-change MaterialNanomaterialsCopper‐doped PolyethyleneComposite PcmNanocompositeThermal EngineeringThermal PropertyThermal PropertiesMaterial Preparation
A composite phase change material (PCM) of copper-doped polyethylene glycol (PEG) 2000 impregnated urchin-like porous titanium dioxide (TiO2) microspheres (PEG/TiO2) was successfully synthesised. The urchin-like porous TiO2 structures contain hollow cavities that can provide a high PEG loading capacity of up to 80 wt%. Copper nanoparticles were uniformly dispersed on the outer and inner surfaces of the 0.8PEG/TiO2 as additives to enhance the thermal conductivity of the composite PCM. The latent heat of the Cu/PEG/TiO2 porous composite PCM reached 133.8 J/g, and the thermal conductivity was 0.58 W/(mK), which was 152.2% higher than that of TiO2 and 38.1% higher than 0.8PEG/TiO2. Moreover, the Cu/PEG/TiO2 porous composite PCM has excellent thermal stability and reliability.
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