OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Anthraquinone modification of microporous carbide derived carbon films for on-chip micro-supercapacitors applications

Brousse, Kevin and Martin, Cédric and Brisse, Anne-lise and Lethien, Christophe and Simon, Patrice and Taberna, Pierre-Louis and Brousse, T. Anthraquinone modification of microporous carbide derived carbon films for on-chip micro-supercapacitors applications. (2017) Electrochimica Acta, 246. 391-398. ISSN 0013-4686

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
956kB

Official URL: http://dx.doi.org/10.1016/j.electacta.2017.06.037

Abstract

The modification of carbide derived carbon (CDC) thin film electrodes with anthraquinone (AQ) molecules was demonstrated by using pulsed chronoamperometry, in 0.1 M NEt4BF4/ACN solution of AQ diazonium derivative. The functionalization of CDC electrodes was only possible when a critical pore size is reached: only 2 nm pore diameter CDC can be grafted with AQ moieties, smaller pore size leading to a poorly functionalized electrode. High AQ surface coverage of 0.88 × 10−10 mol.cm−2 was determined using 2 nm pore size CDC. Despite a decrease in double layer capacitance value of about 10%, the total capacitance of the AQ-modified on-chip CDC electrodes was twice larger than that of pristine CDC film, leading to high total capacitance value of 44 mF.cm−2 (338 F.cm−3). The cyclability of the AQ-modified on-chip CDC electrode was also investigated. The faradic contribution of AQ grafted molecules progressively decreased during cycling and only 39% of the normalized capacity remained after 500 cycles; this decrease has been assigned to electrostatic repulsion of dianionic AQ confined in narrow micropores in the alkaline media.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The original PDF of the article can be found at : http://www.sciencedirect.com/science/article/pii/S0013468617312756
HAL Id:hal-01623096
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université de Nantes (FRANCE)
Other partners > Institut Supérieur d’Electronique et du Numérique - ISEN (FRANCE)
Other partners > Polytech'Nantes (FRANCE)
Other partners > Université Lille 1, Sciences et Technologies - Lille 1 (FRANCE)
Laboratory name:
Funders:
Airbus Group - French network of the electrochem- ical energy storage - ANR
Statistics:download
Deposited By: cirimat webmestre
Deposited On:22 Dec 2017 10:48

Repository Staff Only: item control page