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Electrochemical Kinetic Study of LiFePO4 Using Cavity Microelectrode

Authors :
Pierre-Louis Taberna
Patrice Simon
Stéphane Hamelet
Christian Masquelier
Jeremy Come
Centre National de la Recherche Scientifique - CNRS (FRANCE)
Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Picardie Jules Verne (FRANCE)
Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT)
Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3)
Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP)
Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)
Laboratoire réactivité et chimie des solides - UMR CNRS 7314 (LRCS)
Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)
Institut National Polytechnique de Toulouse - INPT (FRANCE)
Source :
Journal of The Electrochemical Society, Journal of The Electrochemical Society, Electrochemical Society, 2011, vol. 158, pp. 1090-1093. ⟨10.1149/1.3619791⟩
Publication Year :
2011
Publisher :
Electrochemical Society, 2011.

Abstract

International audience; Lithium cation insertion and extraction in LiFePO4 were electrochemically studied with a cavity microelectrode (CME). Cyclic voltammetry measurements were used to characterize the kinetics of the material. LiFePO4 was successfully cycled from 0.1 mV s-1 up to 1 V s-1 and is therefore a suitable material to be used in high power applications, such as asymmetric hybrid supercapacitors. Several kinetic behaviors were observed depending on the sweep rate. The LiFePO4 was found to follow different kinetics behaviors depending of the sweep rate. The charge storage mechanisms were investigated for Liþ extraction/insertion.

Details

Language :
English
ISSN :
00134651 and 19457111
Database :
OpenAIRE
Journal :
Journal of The Electrochemical Society, Journal of The Electrochemical Society, Electrochemical Society, 2011, vol. 158, pp. 1090-1093. ⟨10.1149/1.3619791⟩
Accession number :
edsair.doi.dedup.....f87879139686cd073fae017f23bc396a