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Jimenez, P., Levillain, E., Aleveque, O., Guyomard, D., Lestriez, B. & Gaubicher, J. (2017) Lithium n-Doped Polyaniline as a High-Performance Electroactive Material for Rechargeable Batteries. Angew. Chem.-Int. Edit. 56 1553–1556.
Added by: Richard Baschera (2017-03-23 10:23:25) Last edited by: Richard Baschera (2017-03-23 10:24:47) |
| Type de référence: Article DOI: 10.1002/anie.201607820 Numéro d'identification (ISBN etc.): 1433-7851 Clé BibTeX: Jimenez2017 Voir tous les détails bibliographiques  |
Catégories: ST2E Mots-clés: conducting polymers, energy-storage, films, lithium ion batteries, organic active materials, organic electrode, polyaniline, spectroelectrochemistry Créateurs: Aleveque, Gaubicher, Guyomard, Jimenez, Lestriez, Levillain Collection: Angew. Chem.-Int. Edit. |
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The discovery of conducting lithium-doped polyaniline with reversible redox chemistry allows simultaneous unprecedented capacity and stability in a non-aqueous Li battery. This compound (lithium emeraldinate) was synthesized by lithium-proton exchange on the emeraldine base in an anhydrous lithium-based electrolyte. A combination of UV/Vis-NIR spectroelectrochemistry, XPS, FTIR, and EQCM characterization allowed a unified description of the chemical and electrochemical behavior, showing facile charge delocalization of the doped states and the reversibility of the redox processes in this form of polyaniline. From a practical point of view, lithium emeraldinate behaves as a high-capacity organic active material (230mAhg(-1)) that enables preparation of relatively thick composite electrodes with a low amount of carbon additives and high energy density (460Whkg(-1)). Concomitantly, at 1C rate, 400 cycles were achieved without significant capacity loss, while the coulombic efficiency is greater than 99%.
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