Effects of v content on hydrogen storage properties of V-Ti-Cr alloys with high desorption pressure

Takahiro Kuriiwa, Takahiro Maruyama, Atsunori Kamegawa, Masuo Okada

研究成果: Article査読

41 被引用数 (Scopus)

抄録

Hydrogen storage is one of the most important issues to realize hydrogen society especially for on-board usage. Recently, high-pressure metal hydride (MH) tank attracts many attentions due to its high volumetric hydrogen storage density and relatively easy heat management. To emphasize its merits, further improvements of properties of MH, such as capacity, hydrogen desorption capability at low temperature and durability, are required. In this paper, V-Ti-Cr alloys of V-rich compositions were investigated with perspective of increasing of hydrogen desorption pressure and durability. In both of 60at%V-Ti-Cr and 80at%V-Ti-Cr alloys, good relationship between hydrogen desorption pressure and Ti content was observed. In comparing with 60at%V-Ti-Cr alloys, 80at%V-Ti-Cr alloys showed good durability. It is quite notable that relationship between limitation line (upper substitution limit of Ti by Cr without degradation of hydrogen capacity) and desorption pressure for V-Ti-Cr ternary system with V-rich composition is clarified. And also, it is revealed that in the case of V-Ti-Cr ternary system, not only Ti/Cr ratio but also V content is important factor to obtain alloys with high hydrogen desorption pressure. 75at%V-5at%Ti-Cr as-cast sample showed good durability, hydrogen desorption capability at low temperature and relatively high effective hydrogen capacity simultaneously.

本文言語English
ページ(範囲)9082-9087
ページ数6
ジャーナルInternational Journal of Hydrogen Energy
35
17
DOI
出版ステータスPublished - 2010 9 1

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 燃料技術
  • 凝縮系物理学
  • エネルギー工学および電力技術

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