Designing 3D Multihierarchical Heteronanostructures for High-Performance On-Chip Hybrid Supercapacitors: Poly(3,4-(ethylenedioxy)thiophene)-Coated Diamond/Silicon Nanowire Electrodes in an Aprotic Ionic Liquid

David Aradilla; Fang Gao; Georgia Lewes-Malandrakis; Wolfgav Mueller-Sebert; Pascal Gentile; Maxime Boniface; Dmitry Aldakov; Boyan Iliev; Thomas J. S. Schubert; Christoph E. Nebel; Gerard Bidan

Designing 3D Multihierarchical Heteronanostructures for High-Performance On-Chip Hybrid Supercapacitors: Poly(3,4-(ethylenedioxy)thiophene)-Coated Diamond/Silicon Nanowire Electrodes in an Aprotic Ionic Liquid

David Aradilla ¹ Fang Gao ² Georgia Lewes-Malandrakis ² Wolfgav Mueller-Sebert ² Pascal Gentile ³ Maxime Boniface ⁴ Dmitry Aldakov ⁵ Boyan Iliev Thomas J. S. Schubert Christoph E. Nebel ² Gerard Bidan ⁵

1 PCI - Polymères Conducteurs Ioniques

SYMMES - SYstèmes Moléculaires et nanoMatériaux pour l’Energie et la Santé : DRF/INAC/SYMMES

2 Fraunhofer ISE, Freiburg

3 SiNaps - Silicon Nanoelectronics Photonics and Structures

PHELIQS - PHotonique, ELectronique et Ingénierie QuantiqueS : DRF/INAC/PHELIQS

4 LEMMA - Laboratoire d'Etude des Matériaux par Microscopie Avancée

MEM - Modélisation et Exploration des Matériaux : DRF/INAC/MEM

5 LEMOH - Laboratoire d'Electronique Moléculaire Organique et Hybride

SYMMES - SYstèmes Moléculaires et nanoMatériaux pour l’Energie et la Santé : DRF/INAC/SYMMES

Abstract : A versatile and robust hierarchically multifunctionalized nanostructured material made of poly(3,4-(ethylenedioxy)thiophene) (PEDOT)-coated diamond@silicon nanowires has been demonstrated to be an excellent capacitive electrode for supercapacitor devices. Thus, the electrochemical deposition of nanometric PEDOT films on diamond-coated silicon nanowire (SiNW) electrodes using N-methyl-N-propylpyrrolidinium bis((trifluoromethyl)sulfonyl)imide ionic liquid displayed a specific capacitance value of 140 F g(-1) at a scan rate of 1 mV s(-1). The as-grown functionalized electrodes were evaluated in a symmetric planar microsupercapacitor using butyltrimethylammonium bis((trifluoromethyl)sulfonypimide aprotic ionic liquid as the electrolyte. The device exhibited extraordinary energy and power density values of 26 mJ cm(-2) and 1.3 mW cm(-2) within a large voltage cell of 2.5 V, respectively. In addition, the system was able to retain 80% of its initial capacitance after 15 000 galvanostatic charge-discharge cycles at a high current density of 1 mA cm(-2) while maintaining a Coulombic efficiency around 100%. Therefore, this multifunctionalized hybrid device represents one of the best electrochemical performances concerning coated SiNW electrodes for a high-energy advanced on-chip supercapacitor.

Keywords : Supercapacitors Diamond Conducting Polymers Silicon Nanowires Ionic Liquids Doped Silicon Nanowires Porous Carbon Electrodes High-Energy Density Micro-Supercapacitors High-Power Carbide Nanowires

Document type :

Journal articles

Domain :

Physics [physics]

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https://hal-cea.archives-ouvertes.fr/cea-01849347
Contributor : Jérôme Planès <>
Submitted on : Thursday, July 26, 2018 - 9:27:29 AM
Last modification on : Wednesday, June 26, 2019 - 3:26:03 PM

Designing 3D Multihierarchical Heteronanostructures for High-Performance On-Chip Hybrid Supercapacitors: Poly(3,4-(ethylenedioxy)thiophene)-Coated Diamond/Silicon Nanowire Electrodes in an Aprotic Ionic Liquid

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Designing 3D Multihierarchical Heteronanostructures for High-Performance On-Chip Hybrid Supercapacitors: Poly(3,4-(ethylenedioxy)thiophene)-Coated Diamond/Silicon Nanowire Electrodes in an Aprotic Ionic Liquid

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