Inorganic Hydrated Salt Phase-Change Materials:Property Optimization and Applications
Inorganic hydrated salt phase-change energy storage materials have attracted widespread atten-tion due to their distinguished advantages,including high energy storage density,non-toxicity,and low cost.The studies on inorganic hydrated salts are expected to improve the efficiency of renewable energy utilization and alleviate the energy crisis.However,inorganic hydrated salts exhibit inherent defects,such as severe phase separation,high supercooling,and low thermal conductivity,which hinder their applica-tions.This paper discusses the thermophysical properties of inorganic hydrated salts,including phase change behaviors,thermal conductivity,subcooling phenomenon,and phase separation.The two strategies for property optimization,including composite with porous materials and microencapsulation technology,have been summarized given the defects of inorganic hydrated salts.The practical applications of inorganic hydrated salts in solar-thermal energy storage,solar photoelectric conversion,building energy saving,and cold energy storage have also been presented.
Inorganic hydrated saltsPhase-change materialsThermal energy storageComposites
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