リチウムをインターカレートしたグラファイトの水素化特性

• 石田 渉

  広島大学大学院先端物質科学研究科

• 宮岡 裕樹

  広島大学大学院先端物質科学研究科

• 市川 貴之

  広島大学先進機能物質研究センター

• 宮岡 裕樹

  広島大学先進機能物質研究センター

書誌事項

タイトル別名

• Hydrogenation properties of lithium intercalated graphite
• リチウム オ インターカレートシタ グラファイト ノ スイソカ トクセイ

抄録

Two kinds of nano-structural graphite were prepared from graphite powder by ball-milling under hydrogen or argon atmosphere, where each product is denoted as HG or AG, respectively. And then, non-treated graphite powder (G), HG or AG was milled with Li to synthesize lithium-graphite intercalation compounds, which are denoted as Li-G, Li-HG and Li-AG, respectively. In XRD profiles of Li-G and Li-HG, it was revealed that the peaks correspond to LiC6 and LiCl2, while no peaks were observed in the case of Li-AG. However, similar thermal decomposition reactions were observed for all compounds at about 450°C under an inert gas, indicating that Li-AG includes the lithium-carbon (Li-C) compound. After heat treatment under hydrogen pressure, the formation of LiH was confirmed by XRD measurements for all compounds, indicating that the intercalated lithium reacted with hydrogen. Furthermore, all hydrogenated compounds desorbed hydrogen with heating up to 500°C. In addition, the hydrogenated Li-HG and Li-AG formed lithium carbide (LiC) after hydrogen desorption. On the other hand, in the case of the hydrogenated Li-G, it is confirmed that not only LiC but also LiC₁₂ were formed after dehydrogenation.

収録刊行物

• 炭素

  炭素 2008 (233), 136-139, 2008

  炭素材料学会

キーワード

• Gas storage
• Graphite
• Chemisorption
• Intercalation

詳細情報

• CRID: 1390282679202894720
• NII論文ID: 10021127787
• NII書誌ID: AN00140335
• DOI: 10.7209/tanso.2008.136
• ISSN: 18845495
• ISSN: 03715345
• NDL書誌ID: 9549896
• Web Site: http://ir.lib.hiroshima-u.ac.jp/00033052
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9549896
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