Toward fully organic rechargeable charge storage devices based on carbon electrodes grafted with redox molecules

Estelle Lebegue (1, 2) , Thierry Brousse (1) , Joël Gaubicher (1) , Richard Retoux (3) , Charles Cougnon (2)

1 IMN - Institut des Matériaux Jean Rouxel
2 MOLTECH-Anjou
3 CRISMAT - Laboratoire de cristallographie et sciences des matériaux

Activated carbon powders modified with naphthalimide and 2,2,6,6-tetramethylpiperidine-N-oxyl were assembled into a hybrid electrochemical capacitor containing an organic electrolyte. The fully organic rechargeable system demonstrated an increase in specific capacitance up to 51%, an extended operating voltage of 2.9 V in propylene carbonate, compared to 1.9 V for the unmodified system, and a power 2.5 times higher.

Domaines: Chimie; Matériaux; Chimie organique

Estelle Lebegue, Thierry Brousse, Joël Gaubicher, Richard Retoux, Charles Cougnon. Toward fully organic rechargeable charge storage devices based on carbon electrodes grafted with redox molecules. Journal of Materials Chemistry A, 2014, 2 (23), pp.8599-8602. ⟨10.1039/C4TA00853G⟩. ⟨hal-02547115⟩