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ID 30795
本文ファイル
著者
Fujii, Tatsuo
Ishida, Wataru
Isobe, Shigehito
Fuji, Hironobu
キーワード
Hydrogen absorbing materials
Amorphous materials
Mechanochemical processing
Mossbauer spectroscopy
X-ray and gamma-ray spectroscopies
Thermal analysis
NDC
化学
抄録(英)
On the synthesis of nano-structural hydrogenated graphite by ball-milling under H-2 atmosphere, iron contamination was mingled from steel balls during ball-milling. It is clarified by spectroscopic measurements that the mingled iron formed a non-stoichiometric iron-carbon (Fe-C) compound. The Fe-C phase was transformed to a well-ordered phase with H-2 desorption at 450 degrees C, suggesting that the hydrogen atoms were anomalously trapped at the Fe-C phase. With respect to hydrogen absorbing properties, the mingled iron enhanced the hydrogen capacity by about 50% compared with iron free hydrogenated graphite, where H/Fe was about 13 mass%. Therefore, if the hydrogen absorption site originated in the Fe-C phase could be synthesized independently, it should be recognized as a promising hydrogen storage system.
掲載誌名
Journal of Alloys and Compounds
507巻
2号
開始ページ
547
終了ページ
550
出版年月日
2010-10-08
出版者
Elsevier Science SA
ISSN
0925-8388
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 2010 Elsevier B.V.
関連情報URL
部局名
先進機能物質研究センター