Syntheses and hydrogen desorption properties of metal-borohydrides M(BH4)n (M = Mg, Sc, Zr, Ti, and Zn; n = 2-4) as advanced hydrogen storage materials

Yuko Nakamori, Haiwen Li, Kazutoshi Miwa, Shin Ichi Towata, Shin Ichi Orimo

研究成果: Article

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Metal-borohydrides M(BH4)n (M = Mg, Se, Zr, Ti, and Zn; n = 2-4) were synthesized by mechanical milling process according to the following reaction; MCln + nLiBH4/nNaBH4 → M(BH4)n + nLiCl/nNaCl. Then the thermal desorption properties of M(BH4)n were investigated by gas-chromatography and mass-spectroscopy combined with thermogravimetry. The results indicate that the hydrogen desorption temperature Td of M(BH4)n correlates with the Pauling electronegativity χP of M; that is, Td decreases with increasing value of χP. The components of desorbed gas for M = Mg, Sc, Zr and Ti (χP ≦ 1.5) are hydrogen only, while that for M = Zn (χP = 1.6) contains borane besides hydrogen. The Pauling electronegativity χP of M is an indicator to estimate T d of M(BH4)n as candidates for advanced hydrogen storage materials with high gravimetric hydrogen densities and low desorption temperatures.

元の言語English
ページ(範囲)1898-1901
ページ数4
ジャーナルMaterials Transactions
47
発行部数8
DOI
出版物ステータスPublished - 2006 8 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

フィンガープリント Syntheses and hydrogen desorption properties of metal-borohydrides M(BH<sub>4</sub>)<sub>n</sub> (M = Mg, Sc, Zr, Ti, and Zn; n = 2-4) as advanced hydrogen storage materials' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

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