Experimental studies on intermediate compound of LiBH4

被引:219
作者
Orimo, Shin-Ichi [1 ]
Nakamori, Yuko
Ohba, Nobuko
Miwa, Kazutoshi
Aoki, Masakazu
Towata, Shin-ichi
Zuettel, Andreas
机构
[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[2] Toyota Cent Res & Dev Labs Inc, Aichi 4801192, Japan
[3] Univ Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland
[4] EMPA, Dept Environm Energy & Mobil, CH-8600 Dubendorf, Switzerland
关键词
D O I
10.1063/1.2221880
中图分类号
O59 [应用物理学];
学科分类号
摘要
The formation condition of an intermediate compound of LiBH4 during the partial dehydriding reaction and its local atomistic structure have been experimentally investigated. LiBH4 changes into an intermediate compound accompanying the release of approximately 11 mass % of hydrogen at 700-730 K. The Raman spectra indicate that the B-H bending and stretching modes of the compound appear at lower and higher frequencies, respectively, as compared to those of LiBH4. These features are consistent with the theoretical calculation on the monoclinic Li(2)Bl(2)H(12), consisting of Li+ and [B12H12](2-) ions, as a possible intermediate compound of LiBH4. (c) 2006 American Institute of Physics.
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页数:3
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