Low-temperature synthesis of graphite particles by chemical vapor infiltration and their electrochemical properties for lithium-ion battery
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- Ohzawa Yoshimi
- Department of Applied Chemistry, Aichi institute of Technology
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- Mizuno Kohdai
- Department of Applied Chemistry, Aichi institute of Technology
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- Nakajima Tsuyoshi
- Department of Applied Chemistry, Aichi institute of Technology
Bibliographic Information
- Other Title
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- 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
Description
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.
Journal
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- TANSO
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TANSO 2007 (230), 299-303, 2007
THE CARBON SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282679202947584
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- NII Article ID
- 130004358705
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- ISSN
- 18845495
- 03715345
- 00086223
- http://id.crossref.org/issn/03715345
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed
