Syntheses, Structure and Hydrogen Storage Properties of Borohydrideswith Tri-Valent Metals

2009 Fiscal Year Final Research Report

• Project/Area Number: 20760462
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Structural/Functional materials
• Research Institution: Tohoku University
• Principal Investigator: SATO Toyoto Tohoku University, 原子分子材料科学高等研究機構, 助教 (20455851)
• Project Period (FY): 2008 – 2009
• Keywords: 水素吸蔵材料

Research Abstract

Borohydrides M(BH_4)_n(n: valence of metal M), which are a kind of complex hydrides with boron, are a promising hydrogen storage material because of the high hydrogen gravimetric densities. Rare-earth metals RE with tri-valence (RE=Y(・_P:1.22), Dy(・_P:1.22), Gd(・_P:1.20)) can be guessed to be formed a thermodynamically suitable RE(BH_4)_3 viewpoint from a correlation between thermodynamical stabilities of M(BH_4)_n and electronegativities of M. In this study, focused on the RE elements, novel RE(BH_4)_3 was synthesized, of which crystal structure, was clarified the structure and the hydrogen storage properties.

Research Products

• [Journal Article] (2009)
  • Author(s): Y. Yan, H. -W. Li, T. Sato, N. Umeda, K. Miwa, S. Towata, S. Orimo
  • Journal Title: International Journal of Hydrogen Energy 34 Pages: 5732-5736
  • Peer Reviewed
• [Journal Article] Physical Review B (2008)
  • Author(s): T. Sato, K. Miwa, Y. Nakamori, K. Ohoyama, H. -W. Li, T. Noritake, M. Aoki, S. Towata, S. Orimo
  • Journal Title: 77 Pages: 104114(1)-(8)
  • Peer Reviewed
• [Presentation] (2009)
  • Author(s): T. Sato, M.H. Sorby, K. Ohoyama, K. Ikeda, H. -W. Li, B.C. Hauback, S. Orimo
  • Organizer: Gordon Research Conference Hydrogen-Metal systems
  • Place of Presentation: イタリア
  • Year and Date: 20090712-20090717
• [Presentation] (2008)
  • Author(s): T. Sato, K. Ohoyama, H. -W. Li, Y. Yan, M. Matsuo, Y. Nakamori, K. Ikeda, S. Orimo, K. Miwa, T. Noritake, S. Towata
  • Organizer: IUCr2008 Osaka, Japan XXI Congress and General Assembly of the International Union of Crystallography
  • Place of Presentation: 大阪
  • Year and Date: 20080823-20080831
• [Presentation] (2008)
  • Author(s): T. Sato, K. Miwa, Y. Nakamori, K. Ohoyama, H. -W. Li, T. Noritake, M. Aoki, S. Towata, S. Orimo
  • Organizer: International Symposium on Metal-Hydrogen Systems (MH2008)
  • Place of Presentation: アイスランド
  • Year and Date: 20080624-20080628