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ID 20042
本文ファイル
著者
Gomibuchi, Emi
Kimura, Koichi
Isobe, Shigehito
Nabeta, Koji
Fujii, Hironobu
キーワード
graphite
activation
grinding
thermodynamic analysis
electrochemical properties
NDC
物理学
抄録(英)
Nano-structural graphite prepared by ball milling under H2 or Ar atmosphere was studied as an electrode for electric double layer capacitors (EDLCs) by means of a conventional 2-electrode galvanostatic method. Especially, the product prepared under H2 atmosphere using zirconia balls revealed 500 m2g-1 surface area and showed 12 Fg-1 specific capacitance, which was comparable to that of an activated carbon with large specific surface area of 3000 m2g-1 examined as a reference. A proper condition of the milling time is rather a shorter time than ~8 h, where the graphitic feature is remained in the ball milled product. On the other hand, for the sample prepared by using steel balls, the specific capacitance per surface area was several hundreds times smaller than the others, indicating that the small amount of Fe contamination during milling played a negative role for the EDLC properties.
掲載誌名
Carbon
44巻
5号
開始ページ
983
終了ページ
988
出版年月日
2006-04
出版者
Elsevier B.V.
ISSN
0008-6223
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) 2005 Elsevier B.V.
関連情報URL
部局名
自然科学研究支援開発センター
先進機能物質研究センター