Tuning the de/hydriding thermodynamics and kinetics of Mg by mechanical alloying with Sn and Zn
作者： H.C. Zhong , J.B. Xu
DOI: 10.1016/J.IJHYDENE.2018.11.173
关键词:
摘要: Abstract Mg 95 Sn 3 Zn 2 alloy was prepared by mechanical alloying. The phase constituents and transition were analyzed X-ray diffraction (XRD) method. microstructure characterized scanning electron microscope (SEM). hydrogen storage properties evaluated in detail the measurements of isothermal absorption desorption, pressure-composition isotherms (PCI) using Sieverts addition benefits to extend solubility lattice, as a result supersaturated Mg(Sn, Zn) ternary solid solution synthesized alloying, which decomposed MgH , MgZn hydrogenating process. situ formed nanostructure have positive effects on desorption Mg. showed significantly improved kinetics with lowered activation energies 38.1 kJ/mol 86.6 kJ/mol respectively, exhibited reduced dehydriding enthalpy 67.0 ± 1.9 kJ/(mol·H ).
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