Anomalous hydrogen absorption on non-stoichiometric iron-carbon compound
Journal of Alloys and Compounds 507 巻 2 号
547-550 頁
2010-10-08 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Anomalous hydrogen absorption on non-stoichiometric iron-carbon compound
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| 作成者 |
Fujii Tatsuo
Ishida Wataru
Isobe Shigehito
Fuji Hironobu
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| 収録物名 |
Journal of Alloys and Compounds
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| 巻 | 507 |
| 号 | 2 |
| 開始ページ | 547 |
| 終了ページ | 550 |
| 抄録 |
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.
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| 著者キーワード |
Hydrogen absorbing materials
Amorphous materials
Mechanochemical processing
Mossbauer spectroscopy
X-ray and gamma-ray spectroscopies
Thermal analysis
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| NDC分類 |
化学 [ 430 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Elsevier Science SA
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| 発行日 | 2010-10-08 |
| 権利情報 |
Copyright (c) 2010 Elsevier B.V.
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| 出版タイプ | Author’s Original（十分な品質であるとして、著者から正式な査読に提出される版） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0925-8388
[DOI] 10.1016/j.jallcom.2010.07.221
[NCID] AA10817249
[DOI] http://dx.doi.org/10.1016/j.jallcom.2010.07.221
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