Nanocomposites polymer electrolytes

Nanocomposite Polymer Electrolytes Based on Poly(oxyethylene) and Cellulose Nanocrystals

Cover ImageLaboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces (LEPMI-INPG), BP 75, F38402 St Martin d'Hères Cedex, France, Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), Université Joseph Fourier, BP 53, 38041 Grenoble Cedex 9, France, Laboratoire de Spectrométrie Physique, Université Joseph Fourier, BP 87, 38402 Saint-Martin d'Hères Cedex, France, and Ecole Française de Papeterie et des Industries Graphiques (EFPG-INPG), BP 65, F38402, St Martin d'Hères Cedex, France

J. Phys. Chem. B, 2004, 108 (30), pp 2

DOI: 10.1021/jp0494483

Section:

Abstract

Cover ImageLithium-conducting nanocomposite polymer electrolytes based on high molecular weight poly(oxyethylene) (POE) were prepared from high aspect ratio cellulosic whiskers and lithium imide LiTFSI salt. The thermomechanical behavior of the resulting films was investigated by differential scanning calorimetry, thermogravimetric analysis, and dynamic mechanical analysis. The ionic conductivity and the electrochemical stability of the nanocomposite polymer electrolytes are quite consistent with the specifications of lithium batteries. The ionic mobilities were determined by pulsed magnetic field gradient NMR, and it was shown that the reinforcement does not affect the lithium transference number. High performance nanocomposite electrolytes based on tunicin whiskers were obtained. Indeed, the filler provides a high reinforcing effect, while a high level of ionic conductivity is retained with respect to unfilled polymer electrolytes.

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