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Vol.49, No.12, 989 ~ 995, 2011
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| Title |
| Effect of CNT Addition on the Hydriding and Dehydriding Rates of Mg-Ni-Fe2O3 Alloy |
| Myoung Youp Song , Young Jun Kwak , Byung Soo Lee , Hye Ryoung Park , Byoung Goan Kim |
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| Abstract |
| Samples with compositions of 80 wt% Mg-14 wt% Ni-6 wt% Fe2O3 (named Mg-Ni-Fe2O3), and 78 wt% Mg-14 wt% Ni-6 wt% Fe2O3-2 wt% CNT (named Mg-Ni-Fe2O3-CNT ) were prepared by reactive mechanical grinding. Hydriding and dehydriding properties and effects of CNT addition on the hydriding and dehydriding rates of Mg-Ni-Fe2O3 were then investigated. Activation of the Mg-14Ni-6Fe2O3 sample was completed after three hydriding (under 12 bar H2)-dehydriding (under 1.0 bar H2) cycles at 573 K. The addition of CNT to the Mg-14Ni-6Fe2O3 sample made the activation process unnecessary, with a small decrease in the hydrogen-storage capacity. |
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| Key Words |
| hydrogen absorbing materials, mechanical alloying/milling, microstructure, X-ray diffraction, CNT addition |
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