| Title |
Effect of CNT Addition on the Hydriding and Dehydriding Rates of Mg-Ni-Fe2O3 Alloy |
| Authors |
(Myoung Youp Song); (Young Jun Kwak); (Byung Soo Lee); (Hye Ryoung Park); (Byoung Goan Kim) |
| DOI |
https://doi.org/10.3365/KJMM.2011.49.12.989 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
hydrogen absorbing materials; mechanical alloying/milling; microstructure; X-ray diffraction; CNT addition |
| 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. |