Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Thermal Analysis of LaNi5 Hydride by Volumetric Method

부피법 자동장치를 이용한 LaNi5 수소화합물의 열분석 장치개발

  • 한정섭 (동아대학교 신소재화학공학부 신소재공학과) ;
  • 김선중 (미래에스아이(주))
  • Received : 2018.01.23
  • Accepted : 2018.02.28
  • Published : 2018.02.28
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Abstract

To apply Sievert's type apparatus to thermal analysis of hydrogen absorption materials, the dehydrogenation of $LaNi_5$ system was investigated. As the initial wt% of hydrogen was increased from 0.44 to 1.24 wt%, the peak temperature of evolution rate shifted to higher temperature. However, with the initial wt% of hydrogen higher than 0.95 wt%, the peak temperature of evolution rate did not change. As the heating rate was increased, the peak temperature increased; the peak temperatures for heating rates 0.5, 1.0 and 1.5 K/min were 262.2, 264.1, and 265.9 K respectively. The Sievert's type automatic apparatus can be successively applied to the thermal analysis of $LaNi_5$ hydride.

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References

  1. M. Fichtner, J. Engel, O. Fuhr, O. Kircher, and O. Rubner, "Nanocrystalline aluminium hydrides for hydrogen storage", Mater Sci. Eng. B, Vol. 108, 2004, pp. 42-47. https://doi.org/10.1016/j.mseb.2003.10.036
  2. M. Tanniru, H. Y. Tien, and F. Ebrahimi, "Study of the dehydrogenation behavior of magnesium hydride", Scr. Materialia, Vol. 63, No. 58, 2010, pp. 58-60. https://doi.org/10.1016/j.scriptamat.2010.03.019
  3. W. N. Yang, C. X. Shang, and Z. X. Guo, "Site density effect of Ni particles on hydrogen desorption of $MgH_2$", Int. J. Hydrogen, Eenergy, Vol. 35, 2010, pp. 4534-4552. https://doi.org/10.1016/j.ijhydene.2010.02.047
  4. S. S. Liu, Y. Zhang, L. X. Sun, J. Zhang, J. N. Zhao, F. Xu, and F. L. Huang, "The dehydrogenation performance and reaction mechanisms of $Li_3AlH_6$ with $TiF_3$ additive", Int. J. Hydrogen Eenergy Vol. 35, 2010, pp. 4554-4561. https://doi.org/10.1016/j.ijhydene.2009.12.108
  5. V. D. Dobrovolsky, O. G. Ershova, Y. M. Solonin, R. A. Morozova, and E. M. Severyanina, "A study of the hydrogen sorption properties, thermal stability and the character of the chemical bonds of Ho and Lu Me-H hydrides through the use of thermodesorption and X-ray absorption spectroscopy", J. Alloys and Compounds, Vol. 490, 2010, pp. 68-73. https://doi.org/10.1016/j.jallcom.2009.10.105
  6. O. G. Ershova, V. D. Dobrovolsky, Y. M. Solonin, and O. Y. Khyzhun, "Hydrogen-sorption and thermodynamic characteristics of mechanically grinded TiH1.9 as studied using thermal desorption spectroscopy", J. Alloys and Compounds, Vol. 509, 2011, pp. 128-133. https://doi.org/10.1016/j.jallcom.2010.09.003
  7. J. S. Han and K. D. Park, "Thermal Analysis of Mg Hydride by Sievert's Type Automatic Apparatus", Kor. J. Met. Mater. Vol. 48, No. 12, 2010, pp. 1123-1129. https://doi.org/10.3365/KJMM.2010.48.12.1123
  8. J. S. Han, S. J. Kim, and D. I. Kim, "A Study of the Pressure-Composition-Temperature Curve of $Mg(BH_4)_2$ by Sievert's Type Apparatus", Kor. J. Met. Mater., Vol. 53, No. 11, 2015, pp. 815-819. https://doi.org/10.3365/KJMM.2015.53.11.815
  9. K. D. Park and J. S. Han, "A study on thermal analysis of $MgH_2$ powder made by hydriding chemical vapor deposition method", Kor. J. Chem. Eng., Vol. 29, No. 10, 2012, pp. 1336-1340. https://doi.org/10.1007/s11814-012-0008-1
  10. T. H. Hur, J. S. Han, J. H. Kim, and B. K. Kim, "Thermal Desorption of Hydrogen from $Mg_2Ni$ Hydrogen Storage Materials", J. Nanoscience and Nanotechnology, Vol. 11, 2011, pp. 1-5. https://doi.org/10.1166/jnn.2011.3839
  11. J. S. Han and K. D. Park, "Volumetric Thermal Analysis of Hydrogen Desorption from Mg-13.5 wt% Ni Hydride", Trans. of the Korean Hydrogen and New Energy Society, Vol. 26, No. 4, 2015, pp. 308-317. https://doi.org/10.7316/KHNES.2015.26.4.308
  12. A. Percheron-Guégan, C. Lartigue , J. C. Achard, P. Germi, and F. Tasset, "Neutron and X-ray diffraction profile analyses and structure of $LaNi_5$, $LaNi_5$−xAlx and $LaNi_5$−xMnx intermetallics and their hydrides (deuterides)", J. of the Less Common Metals, Vol. 74, 1980, pp. 1-12. https://doi.org/10.1016/0022-5088(80)90063-6
  13. D. G. Westlake, "A geometric model for the stoichiometry and interstitial site occupancy in hydrides (deuterides) of $LaNi_5$, $LaNi_4Al$ and $LaNi_4Mn$", J. of the Less Common Metals, Vol. 91, 1980, pp. 275-292.