Issue 30, 2011
From the journal:

Journal of Materials Chemistry

Synthesis of novel hierarchical graphene/polypyrrolenanosheet composites and their superior electrochemical performance†

Chaohe Xu,a   Jing Sun*a  and  Lian Gao*a  

* Corresponding authors

a The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding Xi Road, Shanghai, China
E-mail: jingsun@mail.sic.ac.cn, liangao@mail.sic.ac.cn
Fax: +86 21 52413122
Tel: +86 21 52414301

Abstract

Novel hierarchical graphene/polypyrrole (GNS/PPy) nanosheet composites have been successfully fabricated for the first time based on an in situ chemical oxidation polymerization method. Sheet-like PPy with a thickness of 20–50 nm grown on the surface of the composites of the GNS/PPy polymerized at an early stage due to the dominated role of the sheet-like GNS and residue glucose in the synthesis process. Supercapacitors based on the hierarchical composite exhibit large electrochemical capacitance (318.6 F g−1) at a scan rate of 2 mV s−1. They also show superior electrochemical rate capability and cyclic stability. The capacitance retained ∼95% (132.9 F g−1) after 1000 cycles at a scan rate of 100 mV s−1. Accordingly, the hierarchical GNS/PPy nanosheet composites are potential electrode materials for electrochemical supercapacitors.

Graphical abstract: Synthesis of novel hierarchical graphene/polypyrrole nanosheet composites and their superior electrochemical performance

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Article information

DOI
https://doi.org/10.1039/C1JM11275A
Article type
Paper
Submitted
25 Mar 2011
Accepted
19 May 2011
First published
27 Jun 2011

J. Mater. Chem., 2011,21, 11253-11258

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Synthesis of novel hierarchical graphene/polypyrrole nanosheet composites and their superior electrochemical performance

C. Xu, J. Sun and L. Gao, J. Mater. Chem., 2011, 21, 11253 DOI: 10.1039/C1JM11275A

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