Title :

Major Improvement in the Cycling Ability of Pseudocapacitive Vanadium Nitride Films for Micro‐Supercapacitor

Author(s) :

Jrondi, Aiman [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Buvat, Gaëtan [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Pena, Francisco de La [Auteur]
Marinova, Maya [Auteur]
Department of Physics [Thessaloniki]
Huvé, Marielle [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Brousse, Thierry [Auteur]
Institut des Matériaux Jean Rouxel [IMN]
Roussel, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Lethien, Christophe [Auteur correspondant]
Institut Universitaire de France [IUF]
Circuits Systèmes Applications des Micro-ondes - IEMN [CSAM - IEMN ]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Journal title :

Advanced Energy Materials

Pages :

2203462

Publisher :

Wiley-VCH Verlag

Publication date :

2023

ISSN :

1614-6832

HAL domain(s) :

Physique [physics]
Sciences de l'ingénieur [physics]

English abstract : [en]

Vanadium nitride film made using a thin film deposition technique is a promising electrode material for micro-supercapacitor applications owing to its high electrical conductivity and high volumetric and surface capacitance ...
Show more >Vanadium nitride film made using a thin film deposition technique is a promising electrode material for micro-supercapacitor applications owing to its high electrical conductivity and high volumetric and surface capacitance values in aqueous electrolyte. Nevertheless, the cycling stability has to be improved to deliver good capacitance during a large number of cycles. Here, it is shown that vanadium nitride films made by a magnetron sputtering deposition method exhibit remarkable cycling stability (high capacitance retention value after 150 000 cycles), ultra-high rate capability (75% of the initial capacitance at 1.6 V s−1), while providing high surface capacitance values (≈1.4 F cm−2) and very low ageing of the VN electrodes (no loss of performance after 13 months). Additionally, new findings regarding the location of vanadium oxides species responsible for the charge storage mechanism in pseudocapacitive VN films are revealed by transmission electron microscopy electron energy-loss spectroscopy analyses at the nanoscale.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

ANR Project :

Laboratory of excellency for electrochemical energy storage
FAbrication et caRactérisations avancées de micro-supercondensaTeurs tout solide pour rEgimes iMpulsionnels en envIronnements Sévères

Collections :

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

Source :

Harvested from HAL