Title :

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

Author(s) :

Brousse, K. [Auteur]
Centre interuniversitaire de recherche et d'ingenierie des matériaux [CIRIMAT]
Martin, C. [Auteur]
Brisse, A.L. [Auteur]
Institut des Matériaux Jean Rouxel [IMN]
Lethien, C. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Simon, P. [Auteur]
Taberna, P.L. [Auteur]
Centre interuniversitaire de recherche et d'ingenierie des matériaux [CIRIMAT]
Brousse, T. [Auteur]
Institut des Matériaux Jean Rouxel [IMN]

Journal title :

Electrochimica Acta

Pages :

391 - 398

Publisher :

Elsevier

Publication date :

2017-08

ISSN :

0013-4686

English keyword(s) :

Micro-supercapacitors
Carbide-derived carbon
Anthraquinone- Electrochemical grafting
Diazonium chemistry

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

English abstract : [en]

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 ...
Show more >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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Dissection génétique de la Susceptibilité Mendélienne aux infections mycobactériennes chez l'homme
MIcro-supercoNdensateur à porOsité contrôlée pour des applicaTions à fORte densité d'énErgie sur Substrat rigide et flexible

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL