Recent advances in lithium-based complex hydrides for solid-state hydrogen storage (invited)

Y. Nakamori, G. Kitahara, T. Kudo, T. Yamagishi, S. Orimo

研究成果: Conference article査読

抄録

Fundamental researches on complex hydrides are recently of great importance to develop practical hydrogen storage materials with higher gravimetric hydrogen densities than those of conventional materials. First, In this paper, we clarify the correlation between B-H atomistic vibrations in [BH 4]--anion and melting temperatures of MBH4 (M= Li, Na, and K) as indexes of hydrogen desorption temperatures. This investigation implies that partial cation substitutions using smaller sized- and/or higher valenced-cations with higher electronegativities might provide higher energy modes of Raman spectra, and then, lower hydrogen desorption temperatures. Next, as an example, LiNH2 and its partial cation substitution materials are examined. At the start of the reaction, the hydrogen desorption temperature for LiNH2 with partial cation substitution drastically decreased, with the increase in Mg concentration, to around 370K for the sample with x = 30.

本文言語English
ページ(範囲)2431-2436
ページ数6
ジャーナルMaterials Science Forum
475-479
III
DOI
出版ステータスPublished - 2005
イベントPRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China
継続期間: 2004 11 22004 11 5

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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