title: A Redox-Active Binder for Electrochemical Capacitor Electrodes.
abstract: A promising strategy for increasing the performance of supercapacitors is proposed. Until now, a popular strategy for increasing the specific capacity of the electrode consists of grafting redox molecules onto a high surface area carbon structure to add a faradaic contribution to the charge storage. Unfortunately, the grafting of molecules to the carbon surface leads to a dramatic decrease of the electrochemical performances of the composite material. Herein, we used the organic binder as an active material in the charge/discharge process. Redox molecules were attached onto its polymeric skeleton to obtain a redox binder with the dual functionalities of both the binder and the active material. In this way, the electrochemical performance was improved without detrimentally affecting the properties of the porous carbon. Results showed that the use of a redox binder is promising for enhancing both energy and power densities.
authors.affiliation: Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, ANGERS cedex, France.
authors.forename: Corentin
authors.initials: C
authors.lastname: Benoit
authors.affiliation: Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, ANGERS cedex, France.
authors.forename: Dora
authors.initials: D
authors.lastname: Demeter
authors.affiliation: Département de Chimie, Université du Québec à Montréal, C.P. 8888, Succ. Centre-ville, Montréal, Québec, H3C 3P8, Canada. belanger.daniel@uqam.ca.
authors.forename: Daniel
authors.initials: D
authors.lastname: Bélanger
authors.affiliation: Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH-Anjou, 2 bd Lavoisier, 49045, ANGERS cedex, France. charles.cougnon@univ-angers.fr.
authors.forename: Charles
authors.initials: C
authors.lastname: Cougnon
keywords: activated carbon; binders; diazonium salts; grafting; supercapacitors