Polymer ionic liquid bearing radicals as an active material for organic batteries with ultrafast charge-discharge rate
| Autor: | Farid Ouhib, Abdelrahman El Idrissi, Christine Jérôme, Christophe Detrembleur, Abdelhafid Aqil, Mohamed Aqil |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Nitroxide mediated radical polymerization
Polymers and Plastics Radical Organic Chemistry Radical polymerization General Physics and Astronomy Organic radical battery 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Lithium-ion battery 0104 chemical sciences chemistry.chemical_compound Monomer chemistry Polymerization Ionic liquid Polymer chemistry Materials Chemistry 0210 nano-technology |
| Zdroj: | European Polymer Journal. 106:242-248 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2018.07.028 |
| Popis: | We report on the synthesis of a new polymer ionic liquid (PIL) based on polyvinylimidazolium bearing a pendent nitroxide radical on each monomer unit. Firstly, the quaternization of 1-vinylimidazole by a brominated alkoxyamine, i.e. a protected tetramethylpiperidinyloxy (TEMPO) nitroxide, was achieved. Then, the bromide anion was substituted by anion exchange reaction for the bis(trifluoro-methanesulfonyl)imide (TFSI) anion. The as-obtained monomer was successfully polymerized by free radical polymerization at low temperature (40 °C) by using 2,2′-azobis(4-methoxy-2.4-dimethyl valeronitrile) as initiator. Finally, the C O bond of the alkoxyamine pendant groups was thermally cleaved releasing the redox-active TEMPO nitroxide radicals. The PIL bearing TEMPO groups was coated onto a carbon nanotubes buckypaper and tested as cathode in a lithium ion battery. Such battery remarkably exhibits a high charge/discharge rate capability, e.g. at 60C the full charge is reached in 1 min and a high cycling stability; 100% of the initial capacity 60 mA h/g is kept after 1300 cycles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect