Skip to main content
SpringerLink
Log in

Structural Studies of Hydrogen Storage Alloys using X-ray/Neutron Diffraction and Total Scattering

  • Articles
  • Published:
MRS Online Proceedings Library Aims and scope

Abstract

Crystal and local structures and hydrogen occupation of Mg containing materials, (Mg,Ca)Nix (x = 2, 3) intermetallic compounds and a MgCo metastable alloy, have been investigated using in-situ and ex-situ X-ray/neutron diffraction and total scattering.

A C15 Laves phase (Mg0.67Ca0.33)Ni2 showed isotropic lattice expansion upon hydrogenation. Mg and Ca occupied the same site randomly. It has two hydrogen sites, Mg(Ca)2Ni2 site and M(Ca)Ni3 site.

Mg2CaNi9, MgCa2Ni9, and CaNi3 compounds consisted of MgZn2-type (Mg,Ca)2Ni4 cell and CaCu5-type CaNi5 cell stacking along the c-axis. The MgZn2-type cell was occupied by only Mg in Mg2CaNi9, and randomly occupied by both Mg and Ca in MgCa2Ni9. Expansion of this cell strongly depended on the composition: larger expansion was observed in a Ca-rich composition.

Local structure of a Mg-Co alloy synthesized by mechanical alloying has been studied using the PDF (Pair Distribution Function) method. The analysis suggested that material contained two 1–2 nm domains with different compositions and local structures, i.e. Mg-rich and Co-rich domains, and hydrogen was located only in the Mg-rich domain.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. K. Hirose, Phil. Trans. R. Soc. A 368, 3365 (2010).

    Article  CAS  Google Scholar 

  2. F. Izumi and T. Ikeda, Mater. Sci. Forum 321–324, 198 (2000).

    Article  CAS  Google Scholar 

  3. A.C. Larson and R.B. Von Dreele, Los Alamos National Laboratory Report, LAUR 86–748 (1994).

  4. H. Kim, J. Nakamura, H. Shao, Y. Nakamura, E. Akiba, K. Chapman, P. Chupas, T. Proffen, J. Phys. Chem. C 115, 7723 (2011).

    Article  CAS  Google Scholar 

  5. P. F. Peterson, M. Gutmann, Th.Proffen, S. J. L.Billinge, J. Appl. Crystallogr. 33, 1192 (2000).

    Article  CAS  Google Scholar 

  6. X. Qiu, J. W. Thompson, S. J. L.Billinge, J. Appl. Crystallogr. 37, 678 (2004).

    Article  CAS  Google Scholar 

  7. C. L. Farrow, P. Juhas, J. W. Liu, D. Bryndin, E. S. Božin, J. Bloch, Th. Proffen, S. J. L. Billinge, J. Phys. Condens. Matter 19, 335219 (2007).

    Article  CAS  Google Scholar 

  8. N. Terashita, K. Kobayashi, T. Sasai, E. Akiba, J. Alloys Compd. 327, 275 (2001).

    Article  CAS  Google Scholar 

  9. H. Oesterreicher, K. Ensslen, A. Kerlin and E. Bucher, Mat. Res. Bull. 15, 275 (1980).

    Article  CAS  Google Scholar 

  10. Y. Zhang, Y. Tsushio, H. Enoki, E. Akiba, J. Alloys Compd. 393, 147 (2005).

    Article  CAS  Google Scholar 

  11. J. Matsuda, H. Shao, Y. Nakamura, E. Akiba, Nanotechnology 20, 204015 (2009).

    Article  CAS  Google Scholar 

  12. P. Zolliker, K. Yvon, P. Fischer, J. Schefer, Inorg. Chem. 24, 4177 (1985).

    Article  CAS  Google Scholar 

Download references

Author information

Author notes

  1. Thomas Proffen

    Present address: Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN, 37831-6475, USA

  2. Etsuo Akiba

    Present address: Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan

Authors and Affiliations

  1. National Institute of Advanced Industrial Science and Technology, AIST Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8565, Japan

    Yumiko Nakamura, Hyunjeong Kim, Saishun Yamazaki, Kouji Sakaki & Etsuo Akiba

  2. Los Alamos National Laboratory, Los Alamos, NM87545, USA

    Thomas Proffen

Authors
  1. Yumiko Nakamura
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Hyunjeong Kim
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Saishun Yamazaki
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Kouji Sakaki
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Thomas Proffen
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. Etsuo Akiba
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Nakamura, Y., Kim, H., Yamazaki, S. et al. Structural Studies of Hydrogen Storage Alloys using X-ray/Neutron Diffraction and Total Scattering. MRS Online Proceedings Library 1334, 206 (2011). https://doi.org/10.1557/opl.2011.1310

Download citation

  • Published:

  • DOI: https://doi.org/10.1557/opl.2011.1310

Search

Navigation