A novel high performance composite heat storage material is prepared by using 13X zeolite as the porous substrate

using magnesium chloride as reactive salts.Its adsorption performance and heat storage properties are researched experimentally.Scanning electron microscope(SEM) is utilized to characterize the microstructure and morphology of composite materials.Automatic specific surface and porosity analyzer(ASAP 2460) is utilized to measure pore volume of the composite materials.Adsorption performance of composite materials is measured in constant temperature humidity chamber.Experimental data show adsorbance of the composite material with 29%(mass) MgCl2 reached 0.75 g·g-1.The influence of salt contents and relative humidity on the absorption performance of the composites is analyzed.Laser flash diffusivity apparatus(LFA)is used to measure the thermal diffusivities of pure zeolite and composites.Synchronous thermal analyzer(STA

one kind of TG-DSC instrument)is utilized to measure energy storage density of composites

results showed the composite material with 29% MgCl2 reached 1628 kJ·kg-1 and its volume storage density reached 412 kW·h·m-3.Heat storage density of three kinds of adsorption processes(physical adsorption

chemical absorption and absorption of zeolite/MgCl2 composite material) are quantitatively analyzed.