OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Polypyrrole-Fe2O3 nanohybrid materials for electrochemical storage

Mallouki, Mohammed and Tran-Van , François and Sarrazin, Christian and Simon, Patrice and Daffos, Barbara and De, Amitabha and Chevrot, Claude and Fauvarque , Jean-François Polypyrrole-Fe2O3 nanohybrid materials for electrochemical storage. (2007) Journal of Solid State Electrochemistry, vol. 11 (n° 3). pp. 398-406. ISSN 1432-8488

[img] (Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
261kB

Official URL: http://dx.doi.org/10.1007/s10008-006-0161-8

Abstract

We report on the synthesis and electrochemical characterization of nanohybrid polypyrrole (PPy) (PPy/Fe2O3) materials for electrochemical storage applications. We have shown that the incorporation of nanoparticles inside the PPy notably increases the charge storage capability in comparison to the “pure” conducting polymer. Incorporation of large anions, i.e., paratoluenesulfonate, allows a further improvement in the capacity. These charge storage modifications have been attributed to the morphology of the composite in which the particle sizes and the specific surface area are modified with the incorporation of nanoparticles. High capacity and stability have been obtained in PC/NEt4BF4 (at 20 mV/s), i.e., 47 mAh/g, with only a 3% charge loss after one thousand cyles. The kinetics of charge–discharge is also improved by the hybrid nanocomposite morphology modifications, which increase the rate of insertion–expulsion of counter anions in the bulk of the film. A room temperature ionic liquid such as imidazolium trifluoromethanesulfonimide seems to be a promising electrolyte because it further increases the capacity up to 53 mAh/g with a high stability during charge–discharge processes.

Item Type:Article
Additional Information:Thanks to Springer Verlag editor. The definitive version is available at http://www.springerlink.com The original PDF of the article can be found at Journal of Solid State Electrochemistry website : http://www.springerlink.com/content/101568/?p=6c43718cecb24eb9ad2253e47fac64a0&pi=0
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Université de Cergy-Pontoise (FRANCE)
Other partners > Saha Institute of Nuclear Physics – SINP (INDIA)
Other partners > Conservatoire National des Arts et Métiers - CNAM (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
Statistics:download
Deposited By: Celine Cabaup

Repository Staff Only: item control page