Asymmetric micro-supercapacitors based on ...
Document type :
Article dans une revue scientifique: Article original
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Title :
Asymmetric micro-supercapacitors based on electrodeposited Ruo2 and sputtered VN films
Author(s) :
Asbani, Bouchra [Auteur]
Robert, Kevin [Auteur]
Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520
Roussel, Pascal [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Brousse, Thierry [Auteur]
Lethien, Christophe [Auteur]
Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520
Robert, Kevin [Auteur]

Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520
Roussel, Pascal [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Brousse, Thierry [Auteur]
Lethien, Christophe [Auteur]

Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520
Journal title :
Energy Storage Materials
Abbreviated title :
Energy Storage Materials
Volume number :
37
Pages :
207-214
Publication date :
2021-05
ISSN :
24058297
HAL domain(s) :
Chimie/Chimie inorganique
English abstract : [en]
Research on micro-supercapacitors remains one of the most important activities in the area of electrochemical energy storage for powering smart and miniaturized electronic devices. Here we design an asymmetric micro-supercapacitor ...
Show more >Research on micro-supercapacitors remains one of the most important activities in the area of electrochemical energy storage for powering smart and miniaturized electronic devices. Here we design an asymmetric micro-supercapacitor (A-MSC) combining sputtered vanadium nitride film (VN) and electrodeposited hydrous ruthenium oxide (hRuO2) film. Taking advantage of their complementary electrochemical potential windows in 1 M KOH electrolyte, the A-MSC achieves a cell voltage up to 1.15 V, associated to high specific capacitance values for the device (≈ 100 mF cm−2). The energy density of this asymmetric VN / hRuO2 micro-supercapacitor reaches 20 µWh cm−2 at a power density of 3 mW cm−2. Taking benefit from the asymmetric configuration, a 5-fold enhancement factor in energy density is demonstrated for the VN / hRuO2 asymmetric micro-supercapacitor as compared to symmetric VN / VN and hRuO2 / hRuO2 microdevices.Show less >
Show more >Research on micro-supercapacitors remains one of the most important activities in the area of electrochemical energy storage for powering smart and miniaturized electronic devices. Here we design an asymmetric micro-supercapacitor (A-MSC) combining sputtered vanadium nitride film (VN) and electrodeposited hydrous ruthenium oxide (hRuO2) film. Taking advantage of their complementary electrochemical potential windows in 1 M KOH electrolyte, the A-MSC achieves a cell voltage up to 1.15 V, associated to high specific capacitance values for the device (≈ 100 mF cm−2). The energy density of this asymmetric VN / hRuO2 micro-supercapacitor reaches 20 µWh cm−2 at a power density of 3 mW cm−2. Taking benefit from the asymmetric configuration, a 5-fold enhancement factor in energy density is demonstrated for the VN / hRuO2 asymmetric micro-supercapacitor as compared to symmetric VN / VN and hRuO2 / hRuO2 microdevices.Show less >
Language :
Anglais
Audience :
Non spécifiée
Popular science :
Non
Administrative institution(s) :
CNRS
Centrale Lille
ENSCL
ISEN
Institut Catholique Lille
Univ. Artois
Univ. Valenciennes
Université de Lille
Centrale Lille
ENSCL
ISEN
Institut Catholique Lille
Univ. Artois
Univ. Valenciennes
Université de Lille
Collections :
Research team(s) :
Matériaux inorganiques, structures, systèmes et propriétés (MISSP)
Submission date :
2022-03-24T09:02:20Z
2022-03-24T09:41:58Z
2022-03-24T09:41:58Z
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