The preparation of a green shape-stabilized composite phase change material of polyethylene glycol/SiO2 with enhanced thermal performance based on oil shale ash via temperature-assisted sol-gel method

A novel polyethylene glycol (PEG)/SiO2 shape-stabilized composite phase change material (ss-CPCM) with enhanced thermal properties was obtained by using the oil shale ash (OSA) through the temperature-assisted sol-gel method without any co-solvent and surfactant.268