Infrared spectroelectrochemical studies of divided carbon electrodes in acetonitrile-sodium tetrafluoroborate solutions

Marc de Backer (1) , Elise Berrier (1) , Yann Martinon (1) , Nicolas Dujardin (1) , Florence Dufour (1) , Jean-Paul Peres (2) , Christophe Jehoulet (2)

1 LASIRE - Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516
2 SAFT, Direction de la Recherche

Fourier transform infrared spectroelectrochemistry has been used to study the vibrational spectrum of a thin layer of the organic electrolyte in contact with a divided carbon supercapacitor electrode. Variations in the absorption of peaks characteristic of the solvent and of the support electrolyte during an anodic potential scan have been observed. The presence of adsorbed water was detected. The formation of a stable adduct of CH3CN and BF3 under anodic potential was identified.

Domaines: Génie civil

Marc de Backer, Elise Berrier, Yann Martinon, Nicolas Dujardin, Florence Dufour, et al.. Infrared spectroelectrochemical studies of divided carbon electrodes in acetonitrile-sodium tetrafluoroborate solutions. Journal of The Electrochemical Society, 2005, 152, pp.A411-A414. ⟨10.1149/1.1851031⟩. ⟨hal-00268773⟩