| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1620058 | Journal of Alloys and Compounds | 2010 | 4 Pages |
Abstract
Hydrogen absorption in the intermetallic compounds Zr2TM (TM = Cu, Ag, Au) with MoSi2-type structure was characterized by differential scanning calorimetry (DSC) under hydrogen, hydrogen-storage capacity measurement and X-ray diffraction (XRD). The amount of heat for the exothermic peak in DSC due to hydrogen absorption and the maximum hydrogen-storage capacity increased in the order of Zr2Cu > Zr2Ag ≫ Zr2Au. XRD revealed that Zr2Cu and Zr2Ag could decompose into Cu or Ag and ZrHx (x ∼ 2), while Zr2Au can form a solid solution with hydrogen without decomposition. These findings were well explained based on the magnitude and/or sign of the estimated enthalpy change for the decomposition of Zr2TM.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Naruki Endo, Satoshi Kameoka, An Pang Tsai, Zou Lingling, Toshiya Hirata, Chikashi Nishimura,