Preparation of polyhedral graphite particles by arc discharge under atmospheric pressure

Feng Liang, Tasuku Shimizu, Manabu Tanaka, Sooseok Choi, Takayuki Watanabe

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Polyhedral graphite particles (PGPs) were synthesized by arc discharge method under atmospheric pressure in the relatively short electrode gap distance of 1 mm, while graphene flakes and turbostratic graphite were found by increasing the electrode gap distance. The selective synthesis of nano-sized carbon allotropes was controlled by the contribution of carbon ions and carbon radicals with the change of the electrode gap distance. The formation mechanism of PGPs and other carbon allotropes were proposed according to the experimental results. The low concentration of carbon ions to carbon radicals contributes to the formation of PGPs. In contrast, relatively high concentration of carbon ions to carbon radicals contributes to the formation of graphene flakes and turbostratic graphite.

Original languageEnglish
Article number01AK01
JournalJapanese journal of applied physics
Volume52
Issue number1 PART2
DOIs
Publication statusPublished - Jan 1 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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