Issue 3, 2013

Core–sheath structured bacterial cellulose/polypyrrole nanocomposites with excellent conductivity as supercapacitors

Abstract

Core–sheath structured conductive nanocomposites were prepared by wrapping a homogenous layer of polypyrrole (PPy) around bacterial cellulose (BC) nanofibers via in situ polymerization of self-assembled pyrrole. By manipulating the ordered core–sheath nanostructure, BC/PPy nanocomposites were achieved and outstanding electrical conductivity as high as 77 S cm−1 was obtained with the optimized reaction protocols, i.e., feeding mass ratio of BC/Py 1 : 10, molar ratio of FeCl3/Py 0.5 : 1, molar ratio of HCl/Py 1.2 : 1, volume ratio of DMF–H2O 1 : 2, reaction temperature 0 °C, and reaction time 6 h. The BC/PPy nanocomposites demonstrated promising potential for supercapacitors, with a highest mass specific capacitance hitting 316 F g−1 at 0.2 A g−1 current density. The whole-optimized protocol in preparing highly conductive PPy/BC composites may be readily extended to the preparation of new conductive materials based on core–sheath structured BC nanocomposites for various technological applications.

Graphical abstract: Core–sheath structured bacterial cellulose/polypyrrole nanocomposites with excellent conductivity as supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
23 Aug 2012
Accepted
03 Sep 2012
First published
22 Oct 2012

J. Mater. Chem. A, 2013,1, 578-584

Core–sheath structured bacterial cellulose/polypyrrole nanocomposites with excellent conductivity as supercapacitors

H. Wang, L. Bian, P. Zhou, J. Tang and W. Tang, J. Mater. Chem. A, 2013, 1, 578 DOI: 10.1039/C2TA00040G

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