Browse > Article
http://dx.doi.org/10.3365/KJMM.2011.49.12.945

Cycling Characteristics of MgH2 madeby Hydriding Chemical Vapor Deposition Method  

Park, Kyung-Duck (Department of Materials Science and Engineering, Dong-A University)
Han, Jeong-Seb (Department of Materials Science and Engineering, Dong-A University)
Publication Information
Korean Journal of Metals and Materials / v.49, no.12, 2011 , pp. 945-949 More about this Journal
Abstract
The cycling characteristics of $MgH_2$ made by hydriding chemical vapor deposition method have been investigated. The particle size of $MgH_2$ made by HCVD was about $1{\mu}m$. The cycling experiment was performed by measuring hydrogen quantity absorbed at 673 K and under 35 atm of hydrogen pressure for 30 min. Up to 3 cycles the hydrogen storage capacity increased, but from 4 to 6 cycles the hydrogen storage capacity decreased rapidly. During this cycling test the particle size increased gradually from $1{\mu}m$ to $6{\mu}m$. This increase was due to sintering by the high reaction temperature and the heat of reaction during hydrogen absorption. From 7 to 30 cycles, the hydrogen storage capacity was maintained at 5.8 wt%. Even after 30 cycles, the plateau pressure was constant.
Keywords
hydrogen absorbing materials; vapor deposition; hydrogen; X-ray diffraction; magnesium hydride;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Jeong Seb Han, Ph. D Thesis, p.104-129, KAIST, Daejeon (1986).
2 Philipose SM., Mani. N, Kesavan TR, and Ramaprabhu. S, Int. J. Hydrogen Energy. 27, 419 (2002).   DOI   ScienceOn
3 Kandavel M and Ramaprabhu S, Int. J. Hydrogen Energy. 32, 620 (2007).   DOI   ScienceOn
4 S. M. Lee, H. Lee, J. H. Kim, P. S. Lee, and J. Y. Lee, J. Alloys Compd. 308, 259 (2000).   DOI   ScienceOn
5 T. Akiyama, H, Isogai, and J. Yagi, J. Alloys Compd. 252, L1 (1997).   DOI   ScienceOn
6 Chunyu Zhu, Haruya Hayashi, I. Saita, and T. Akiyama, Int. J. Hydrogen Energy. 34, 283 (2009).
7 Chunyu Zhu, Norihito Sakaguchi, Sou Hosokai, Seiichi Watanabe, and T. Akiyama, Int. J. Hydrogen Energy. 36, 3600 (2011).   DOI   ScienceOn
8 Shun Hiroi, Sou Hosokai, and T. Akiyama, Int. J. Hydrogen Energy. 36, 1442 (2011).   DOI   ScienceOn
9 I. Saita, T. Toshima, S. Tanda, and T. Akiyama, J. Alloys Compds. 446, 80 (2007).
10 Huang ZG, Guo ZP, Calka A, Wexler D, Lukey C, and Liu HK, J. Alloys Compds. 422, 299 (2006).   DOI   ScienceOn
11 Jensen TR, Andreasen A, Vegge T, Andreasen JW, and Stahl K, Int. J. Hydrogen Energy. 31, 2052 (2006).   DOI   ScienceOn
12 A.Ye. Yermakov, N.V. Mushnikov, M.A. Uimin, V.S. Gaviko, A.P. Tankeev, A.V. Skripov, A.V. Soloninin, and A.L, and Buzlukov, J. Alloys Compds. 425, 367 (2006).   DOI   ScienceOn
13 J. S. Han and K. D. Park, Kor. J. Met. Mater. 48, 1123 (2010).