Asymmetric micro-supercapacitors based on electrodeposited Ruo2 and sputtered VN films | Asbani, Bouchra
/5

0 avis

Asymmetric micro-supercapacitors based on electrodeposited Ruo2 and sputtered VN films

Archive ouverte : Article de revue

Asbani, Bouchra | Robert, Kevin | Roussel, Pascal | Brousse, Thierry | Lethien, Christophe

Edité par HAL CCSD ; Elsevier

International audience. 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.

Consulter en ligne

Suggestions

Du même auteur

Ultra-high areal capacitance and high rate capability RuO2 thin film electrodes for 3D micro-supercapacitors | Asbani, Bouchra

Ultra-high areal capacitance and high rate capability RuO2 thin film electr...

Archive ouverte: Article de revue

Asbani, Bouchra | 2021-11

International audience. To power the next generation of miniaturized electronic devices, 3D micro-supercapacitors are a new class of millimeter scale electrochemical capacitors with superior storage performance than...

Novel insights into the charge storage mechanism in pseudocapacitive vanadium nitride thick films for high-performance on-chip micro-supercapacitors | Robert, Kevin

Novel insights into the charge storage mechanism in pseudocapacitive vanadi...

Archive ouverte: Article de revue

Robert, Kevin | 2020-03-01

International audience. The Internet of Things, enabled by a worldwide network of interconnected sensors, is limited in its large-scale deployment of nomadic miniaturized devices due to the bounds of energy self-suf...

On chip MnO<sub>2</sub>-based 3D micro-supercapacitors with ultra-high areal energy density | Bounor, Botayna

On chip MnO2-based 3D micro-supercapacitors with ultra-high area...

Archive ouverte: Article de revue

Bounor, Botayna | 2021

International audience. In the near future, Internet of Things will be widely deployed all over the connected world. Powering will be crucial for miniaturized electronic devices requiring fast charging, high energy ...

Du même sujet

Facile Assembly of Hybrid Micro-Supercapacitors for a Sunlight-Powered Energy Storage System | Li, Min

Facile Assembly of Hybrid Micro-Supercapacitors for a Sunlight-Powered Ener...

Archive ouverte: Article de revue

Li, Min | 2022-10-26

International audience. Herein, hybrid micro-supercapacitors (MSCs), consisting of positive CoNi layer double hydroxides (LDHs) decorated on carbon nanotubes (CoNi LDHs@CNTs) and negative CNT electrodes, were assemb...

Ultra-high areal capacitance and high rate capability RuO2 thin film electrodes for 3D micro-supercapacitors | Asbani, Bouchra

Ultra-high areal capacitance and high rate capability RuO2 thin film electr...

Archive ouverte: Article de revue

Asbani, Bouchra | 2021-11

International audience. To power the next generation of miniaturized electronic devices, 3D micro-supercapacitors are a new class of millimeter scale electrochemical capacitors with superior storage performance than...

Enhancing Cycling Stability and Specific Capacitance of Vanadium Nitride Electrodes by Tuning Electrolyte Composition | Haye, Emile

Enhancing Cycling Stability and Specific Capacitance of Vanadium Nitride El...

Archive ouverte: Article de revue

Haye, Emile | 2022-06-06

International audience. In this study, the tuning of the KOH electrolyte composition is proposed as a strategy to drastically limit the capacitance fade of vanadium nitride (VN) electrode. We demonstrate that the us...

Influence of ion implantation on the charge storage mechanism of vanadium nitride pseudocapacitive thin films | Le Calvez, Etienne

Influence of ion implantation on the charge storage mechanism of vanadium n...

Archive ouverte: Article de revue

Le Calvez, Etienne | 2021-04

International audience. The influence of microstructural or structural defects is seldom investigated in pseudocapacitive electrodes. Indeed, most of the synthesized materials do present defects at every scales whic...

Atomic Layer Deposition of a Nanometer-Thick Li<sub>3</sub>PO<sub>4</sub> Protective Layer on LiNi<sub>0.5</sub>Mn<sub>1.5</sub>O<sub>4</sub> Films: Dream or Reality for Long-Term Cycling? | Hallot, Maxime

Atomic Layer Deposition of a Nanometer-Thick Li3PO4 P...

Archive ouverte: Article de revue

Hallot, Maxime | 2021-04-07

International audience. LiNi0.5Mn1.5O4 (LNMO) is a promising 5V-class electrode for Li-ion batteries but suffers from manganese dissolution and electrolyte decomposition owing to the high working potential. An attra...

X-ray microdiffraction study of LiMn1.5 Ni0.5O4 thin films deposited by sputtering for Li-ion micro-batteries application | Leviel, Clément

X-ray microdiffraction study of LiMn1.5 Ni0.5O4 thin films deposited by spu...

Archive ouverte: Communication dans un congrès

Leviel, Clément | 2021-11-15

National audience

Chargement des enrichissements...