Experimental Study of Hydrogen Absorption/Desorption Characteristics of AB5 Solid Metal Hydrogen Storage System
To study the performance of hydrogen absorption/desorption of AB5 solid metal hydrogen storage system under different temperatures and pressures,an experimental platform with a small solid metal hydrogen storage tank was established,and hydrogen absorption/desorption cycling experiments under different temperatures and pressures were designed.A circulating water bath system was used to construct a heat exchange environment to circulate the heat to the solid metal hydrogen storage tank,and to test the influences of the key operating parameters,such as the pressure and temperature of hydrogen absorption and desorption,on the performance of hydrogen absorption/desorption of the AB5 solid metal hydrogen storage system.The results show that higher hydrogen absorption pressures and temperatures can promote hydrogen absorption efficiency under the corresponding hydrogen absorption equilibrium pressures.At the same time,higher hydrogen absorption pressures exacerbate the chemosynthesis reactions in the main hydrogen absorption phase of the system,resulting in a strong heat exchange behavior,and maintaining continuous hydrogen desorption at different release pressures requires the appropriate desorption temperature.Under the same pressure conditions,a higher hydrogen desorption temperature increases the hydrogen desorption efficiency of the system,so that the pressure difference of hydrogen inside the system can meet the requirements of the corresponding hydrogen desorption conditions to maintain continuous and stable hydrogen desorption.The above conclusions can provide a reference for studying AB5 type solid metal hydrogen storage systems.
solid metal hydrogen storagehydrogen absorption/desorptionwater circulationpressuretemperature
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