کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1282379 | 1497565 | 2012 | 6 صفحه PDF | دانلود رایگان |
Hydrogen is one of the best alternative to petroleum as an energy carrier. However, the development of a Hydrogen-based economy requires commercialization of safe and cost-effective Hydrogen storage system. In this paper, alloys belonging to Mg–Zr–Mn–Ni alloy system are synthesized using high energy ball milling method. The particle size evolution, chemical analysis and nano-scaled structures were characterized by using SEM, EDXS and XRD techniques, respectively. The optimized - highest hydrogen storing - alloy has particle size of about 8.36 ± 1.17 μm with crystallite size 16.99 ± 5.48 nm. Hydrogen absorption-desorption measurement is carried out on the principle of pressure reduction method. The alloy coded with MZ1 shows uptake of greater than 7 mass % H2 at a charging temperature of 200 °C, indicating high gravimetric hydrogen storage capacity at relatively lower hydriding temperature. The optimized Mg–Zr–Mn–Ni alloy also shows considerably enhanced hydriding – dehydriding kinetics, compare to pure Mg.
► Investigated catalytic effect of Zr, Mn and Ni on hydrogen uptake characteristics on Mg.
► Results indicate enhancements to kinetics due to modifications to local surface of Mg.
► High uptake capacity with fast kinetics can be attained using minor alloying with elemental species.
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 4, February 2012, Pages 3671–3676