Highly selective growth of vertically aligned double-walled carbon nanotubes by a controlled heating method and their electric double-layer capacitor properties

Takayuki Iwasakr, Tasuku Maki, Daisuke Yokoyama, Hironori Kumagai, Yasuhiro Hashimoto, Takuma Asari, Hiroshi Kawarada

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Vertically aligned double-walled carbon nanotubes (DWCNTs) with the highest selectivity of 90% were synthesized by a controlled heating method and their electric double-layer capacitor characteristics were evaluated. DWCNT arrays had a specific capacitance of 83 F/g, which is one of the highest values among CNT arrays in a nonaqueous solution and is almost equivalent to that for single-walled CNT (SWCNT) arrays reported previously. At the same specific capacitance, DWCNTs with superior structural properties are more promising for practical capacitors than SWCNTs.

Original languageEnglish
Pages (from-to)53-55
Number of pages3
JournalPhysica Status Solidi - Rapid Research Letters
Volume2
Issue number2
DOIs
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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