Article abstract
Nature Materials 3, 476 - 481 (2004)
doi:10.1038/nmat1158
The plastic-crystalline phase of succinonitrile as a universal matrix for solid-state ionic conductors
Pierre-Jean Alarco1, Yaser Abu-Lebdeh1, Ali Abouimrane1 and Michel Armand1,2
Abstract
Solid ionic conductors are actively sought for their potential application in electrochemical devices, particularly lithium batteries. We have found high ionic conductivity for a large variety of salts dissolved in the highly polar medium based on the plastic-crystal form of succinonitrile (N
C–CH2–CH2–CN). Its high diffusivity, plasticity and solvating power allowed the preparation of a large number of materials with high ionic conductivity, reaching values of 3 mS cm-1 at 25 °C (two orders of magnitude above polymers). Their ease of preparation and processing allowed us to study the influence of the solute on ionic conduction within this medium. Comparisons revealed a dichotomy between plastic crystals and conventional polymer media. The usefulness of these new, easily processed electrolytes was asserted in electrochemical tests with lithium intercalation electrodes.
- International Laboratory on Electro-Active Materials, Department of Chemistry, University of Montreal, Montreal H3C 3J7, Canada
- Current address: 150 les Corjons, 38410 Saint Martin-d'Uriage, France
Correspondence to: Michel Armand1,2 e-mail: michel.armand9@wanadoo.fr
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