Issue 9, 2013

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

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.

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

Supplementary files

Article information

Article type
Communication
Submitted
20 Dec 2012
Accepted
17 Jan 2013
First published
17 Jan 2013

J. Mater. Chem. A, 2013,1, 2999-3003

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

W. Choi, S. Endo, K. Oyaizu, H. Nishide and K. E. Geckeler, J. Mater. Chem. A, 2013, 1, 2999 DOI: 10.1039/C3TA01588B

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