title: Lithium n-Doped Polyaniline as a High-Performance Electroactive Material for Rechargeable Batteries.
abstract: 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 (230 mAh g-1) that enables preparation of relatively thick composite electrodes with a low amount of carbon additives and high energy density (460 Wh kg-1). Concomitantly, at 1C rate, 400 cycles were achieved without significant capacity loss, while the coulombic efficiency is greater than 99 %.
authors.affiliation: Institut des Matériaux Jean Rouxel (IMN), CNRS UMR 6502, Université de Nantes, 2 rue de la Houssinière BP 32229, 44322, Nantes Cedex 3, France.
authors.forename: Pablo
authors.identifier: 0000-0003-1837-9752
authors.initials: P
authors.lastname: Jiménez
authors.affiliation: Laboratoire MOLTECH-Anjou, CNRS UMR 6200, Université d'Angers, 2 Bd Lavoisier, 49045, Angers Cedex 1, France.
authors.forename: Eric
authors.initials: E
authors.lastname: Levillain
authors.affiliation: Laboratoire MOLTECH-Anjou, CNRS UMR 6200, Université d'Angers, 2 Bd Lavoisier, 49045, Angers Cedex 1, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Alévêque
authors.affiliation: Institut des Matériaux Jean Rouxel (IMN), CNRS UMR 6502, Université de Nantes, 2 rue de la Houssinière BP 32229, 44322, Nantes Cedex 3, France.
authors.forename: Dominique
authors.initials: D
authors.lastname: Guyomard
authors.affiliation: Institut des Matériaux Jean Rouxel (IMN), CNRS UMR 6502, Université de Nantes, 2 rue de la Houssinière BP 32229, 44322, Nantes Cedex 3, France.
authors.forename: Bernard
authors.initials: B
authors.lastname: Lestriez
authors.affiliation: Institut des Matériaux Jean Rouxel (IMN), CNRS UMR 6502, Université de Nantes, 2 rue de la Houssinière BP 32229, 44322, Nantes Cedex 3, France.
authors.forename: Joël
authors.initials: J
authors.lastname: Gaubicher
keywords: conducting polymers; lithium ion batteries; organic active materials; polyaniline; spectroelectrochemistry