Robust and efficient charge storage by uniform grafting of TEMPO radical polymer around multi-walled carbon nanotubes

Wonsung Choi, Shogo Endo, Kenichi Oyaizu, Hiroyuki Nishide, Kurt E. Geckeler

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The radical polymer of redox-active nitroxide was first terminally modified and then grafted onto multi-walled carbon nanotubes (MWNTs) by a facile terminating reaction. The radical polymer-grafted MWNTs allowed a high dispersibility in organic solvents and fadeless redox ability of nitroxide. The TEM images revealed that the radical polymer was successfully wrapped around a MWNT with nanometre thickness showing a core-shell nanotube structure homogeneously over the whole MWNTs. The radical polymer wrapping around the MWNT exhibited quantitative and high-rate redox properties of nitroxide suitable for a cathode-active material, which was prominent when compared with a radical polymer-grafted MWNT via a "grafting from" method. These results demonstrate that nano-scale homogeneous wrapping prevented the aggregation of the radical polymer and allowed the rapid counterion accommodation leading to quantitative and rapid charge propagation.

Original languageEnglish
Pages (from-to)2999-3003
Number of pages5
JournalJournal of Materials Chemistry A
Volume1
Issue number9
DOIs
Publication statusPublished - 2013 Mar 7

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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