Intercalation of PF6- anion into graphitic carbon with nano pore for dual carbon cell with high capacity

Tatsumi Ishihara, Yuji Yokoyama, Futoshi Kozono, Hidemi Hayashi

Research output: Contribution to journalArticlepeer-review

70 Citations (Scopus)

Abstract

Intercalation property of PF6- into graphitic carbon was studied for a hybrid capacitor with different ratio of cathode and anode amount. Graphene sheet distance increased with increasing PF6 - intercalation amount and it saturated at 0.4 nm at high applied potential, which is corresponded to stage 2 structure. On the other hand, it was found that nano size pore into graphene sheet was introduced at higher applied potential with 20 times larger anode carbon and this nano porous carbon shows a large capacity for intercalation capacity of 147 mAh g-1. The estimated energy density of the hybrid capacitor using carbon with nano bubble structure was ca. 400 Wh kg-1.

Original languageEnglish
Pages (from-to)6956-6959
Number of pages4
JournalJournal of Power Sources
Volume196
Issue number16
DOIs
Publication statusPublished - Aug 15 2011

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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