MISC

2007年

CVI法による黒鉛粒子の低温合成とリチウムイオン電池負極特性

炭素
  • 大澤善美
  • ,
  • 水野広大
  • ,
  • 中島 剛

2007[No.230]
230
開始ページ
299
終了ページ
303
DOI
10.7209/tanso.2007.299
出版者・発行元
THE CARBON SOCIETY OF JAPAN

Using pressure-pulsed chemical vapor infiltration technique, pyrolytic carbon (pyrocarbon) was deposited at low temperature below 1100°C from the source gases of C6H6 (6%)-H2 into Ni-foam as catalyst. Pyrocarbon could be deposited at 650 °C or higher. The crystallinity was increased with the temperature elevation up to 900°C. It was found by XRD and Raman spectroscopy that high crystalline pyrocarbon particles having mainly graphite phase were deposited at 800-900°C. However, low crystalline carbon was co-deposited under the condition of temperature above 900 °C. For the samples obtained at 900°C or lower, the charge-discharge behaviors were similar to that of high crystalline natural graphite. On the other hand, "sloping region" in charge-discharge curves were observed for the sample obtained at 1000 and 1100 °C, resulting from the co-deposition of low crystalline carbon. The sample obtained at 850 t showed the highest reversible capacity of 352 mAhg-1 at a current density of 30 mAg-1, and 8 % of the capacity was maintained even at 3000 mAg-1.

リンク情報
DOI
https://doi.org/10.7209/tanso.2007.299
CiNii Articles
http://ci.nii.ac.jp/naid/130004358705
URL
https://jlc.jst.go.jp/DN/JALC/00376455404?from=CiNii
ID情報
  • DOI : 10.7209/tanso.2007.299
  • ISSN : 0371-5345
  • CiNii Articles ID : 130004358705

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