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A novel polyethylene glycol (PEG)/SiO2 shape-stabilized composite phase change material (ss-CPCM) was prepared with the ‘hazardous waste’ oil shale ash. In this composite, PEG serves as the phase change material for thermal energy storage and SiO2 acts as the carrier matrix to provide structural strength and prevent the leakage of melted PEG. The calcination-alkali leaching method was applied to prepare...
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