Li$$_{4}$$FeH$$_{6}$$; Iron-containing complex hydride with high gravimetric hydrogen density
Li$$_{4}$$FeH$$_{6}$$; 高水素重量密度の鉄錯体水素化物
齋藤 寛之; 高木 成幸*; 松尾 元彰*; 飯島 祐樹*; 遠藤 成輝*; 青木 勝敏*; 折茂 慎一*
Saito, Hiroyuki; Takagi, Shigeyuki*; Matsuo, Motoaki*; Iijima, Yuki*; Endo, Naruki*; Aoki, Katsutoshi*; Orimo, Shinichi*
Li$$_{4}$$FeH$$_{6}$$, which has the highest gravimetric hydrogen density of iron-containing complex hydrides reported so far, is synthesized by hydrogenation of a powder mixture of iron and LiH above 6.1 GPa at 900 $$^{circ}$$C. ${it In situ}$ synchrotron radiation X-ray diffraction measurements reveal that while kinetics require high temperature and thus high pressure for the synthesis, Li$$_{4}$$FeH$$_{6}$$ is expected to be thermodynamically stable slightly below room temperature at ambient pressure; further synthetic studies to suppress the kinetic effects may enable us to synthesize Li$$_{4}$$FeH$$_{6}$$ at moderate pressures. Li$$_{4}$$FeH$$_{6}$$ can be recovered at ambient conditions where Li$$_{4}$$FeH$$_{6}$$ is metastable.
使用言語 : English
掲載資料名 : APL Materials (Internet)
: 2
: 7
ページ数 : p.076103_1 - 076103_7
発行年月 : 2014/07
出版社名 : American Institute of Physics
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キーワード : high pressure and high temperature; in situ synchrotron radiation X-ray diffraction; hydride; iron
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登録番号 : AA20140264
抄録集掲載番号 : 42001051
論文投稿番号 : 14695
Accesses  (From Jun. 2, 2014)
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パーセンタイル:39.43
分野:Nanoscience & Nanotechnology
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