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Physicochemical and electrochemical properties of imidazolium ionic liquids: Cycling performance of low cost lithium ion batteries with LiFePO4 cathode

Published online by Cambridge University Press:  20 May 2013

Hassan. Srour ,
Hélene. Rouault  and
Catherine C. Santini
Hassan. Srour
Affiliation:
UMR 5265 CNRS- C2P2, 43 Boulevard du 11 Novembre 1918, 69616 Villeurbanne, France. CEA-Liten, 17 rue des Martyrs 38054 Grenoble Cedex 9, France.
Hélene. Rouault
Affiliation:
CEA-Liten, 17 rue des Martyrs 38054 Grenoble Cedex 9, France.
Catherine C. Santini*
Affiliation:
UMR 5265 CNRS- C2P2, 43 Boulevard du 11 Novembre 1918, 69616 Villeurbanne, France.
*
*Email: catherine.santini@univ-lyon1.fr
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Abstract

This manuscript reports investigation conducted on room temperature ionic liquids (RTILs) C1CnImNTf2/n=4, 6 in order to use it as electrolyte solvent in lithium ion battery. The ionic conductivity, viscosity, ion self-diffusion coefficients, and electrochemical stability in C1CnImNTf2 are presented. A solution of C1CnImNTf2/n=4, 6 containing 1.6 mol.L-1 of LiNTf2 has been used as the electrolyte in a Li-ion battery with graphite and LiFePO4 as respectively negative and positive active materials. [Li][C1C6Im][NTf2] shows the best cycling performance: a capacity up to 120 mAh.g-1 at C/10 rate at 25°C.

Keywords

Likineticsstorage
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1575: Symposium VV – Materials Applications of Ionic Liquids , 2013 , mrss13-1575-vv06-06
Copyright
Copyright © Materials Research Society 2013 

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References

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