Pressure-pulsed chemical vapor infiltration of pyrolytic carbon into fibrous tin prepared from carbonized paper preform

Yoshimi Ohzawa, Masami Mitani, Vinay Gupta, Michio Inagaki, Tsuyoshi Nakajima

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

The plate-type negative electrodes for Li-ion rechargeable battery were prepared by pressure-pulsed chemical vapor infiltration of pyrolytic carbon at 350°C from C3H8 (30%)-H2 into the TiN-based electroconductive forms having the fibrous structure. The electrodes had the three-dimensional current paths in the layers of active materials without the organic binders and the conductive additives. The charge-discharge profiles were similar to that observed in non-graphitizable carbon having disordered structure. Reversible capacity of pyrolytic carbon at current density of 0.2 mA cm-2 and coulombic efficiency at the first cycle were ∼500mA h g-1 and ∼72%, respectively. The capacity at current density of 8mA cm-1 maintained 80% of that at 0.2mA cm-2.

Original languageBritish English
Pages (from-to)9-13
Number of pages5
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume386
Issue numberPART 1
DOIs
StatePublished - 2002
EventProceedings of the First International Symposium on Nanocarbons - Nagano, Japan
Duration: 14 Nov 200116 Nov 2001

Keywords

  • Chemical vapor infiltration
  • Lithium ion battery
  • Porous material
  • Pyrolytic carbon

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