Journal ArticleDOI
Vanadium Oxide Nanowire–Carbon Nanotube Binder‐Free Flexible Electrodes for Supercapacitors
Sanjaya D. Perera,Bijal B. Patel,Nour Nijem,Katy Roodenko,Oliver Seitz,John P. Ferraris,Yves J. Chabal,Kenneth J. Balkus +7 more
TLDR
In this paper, the authors developed a simple method for preparing freestanding carbon nanotube (CNT)-V2O5 nanowire (VNW) composite paper electrodes without using binders.Abstract:
Vanadium pentoxide (V2O5) layered nanostructures are known to have very stable crystal structures and high faradaic activity. The low electronic conductivity of V2O5 greatly limits the application of vanadium oxide as electrode materials and requires combining with conducting materials using binders. It is well known that the organic binders can degrade the overall performance of electrode materials and need carefully controlled compositions. In this study, we develop a simple method for preparing freestanding carbon nanotube (CNT)-V2O5 nanowire (VNW) composite paper electrodes without using binders. Coin cell type (CR2032) supercapacitors are assembled using the nanocomposite paper electrode as the anode and high surface area carbon fiber electrode (Spectracarb 2225) as the cathode. The supercapacitor with CNT-VNW composite paper electrode exhibits a power density of 5.26 kW Kg−1 and an energy density of 46.3 Wh Kg−1. (Li)VNWs and CNT composite paper electrodes can be fabricated in similar manner and show improved overall performance with a power density of 8.32 kW Kg−1 and an energy density of 65.9 Wh Kg−1. The power and energy density values suggest that such flexible hybrid nanocomposite paper electrodes may be useful for high performance electrochemical supercapacitors.read more
Citations
More filters
Journal ArticleDOI
Activation properties of reticulate Ni 3 S 2 electrode materials grown on nickel foam for high performance supercapacitors
TL;DR: In this article, a three-dimensional reticulate Ni3S2 was fabricated by a facile hydrothermal method with excellent capacitance after activation when used as electrode materials.
Journal ArticleDOI
High-capacity three-dimensional solar rechargeable micro-supercapacitor using MnO2/V2O5-based binary metal oxide nanocomposite ink
TL;DR: In this paper , a pen-drawn self-powered micro-supercapacitor (MSC) was used for powering portable units using high-performance binary metal oxide nanocomposite ink.
Proceedings ArticleDOI
V2O5 nanowires coated yarn based temperature sensor for smart textiles
TL;DR: The present work demonstrates the potential of using yarn as a flexible temperature sensor that can be used to realize smart textile for wearable and healthcare applications.
Book ChapterDOI
Templating of Metal Oxides by Electrodeposition
TL;DR: In this paper, a template-assisted electrodeposition of nanostructured transition metal oxide (MO) or metal hydroxide thin films was used to obtain a mesoporous MO network.
Journal ArticleDOI
Synthesis and Electrochemical Properties of Lignin-Derived High Surface Area Carbons
Artur M. Suzanowicz,Youngjin Lee,Abigail Elizabeth Schultz,Otavio J. B. J. Marques,Hao Lin,Carlo U. Segre,Braja K. Mandal +6 more
TL;DR: The performance of electric double-layer capacitors (EDLCs) is highly related to the morphology of porous carbon electrodes, where high surface area and pore size distribution are proportional to capacitance to a significant extent as discussed by the authors .
References
More filters
Journal ArticleDOI
Materials for electrochemical capacitors
TL;DR: This work has shown that combination of pseudo-capacitive nanomaterials, including oxides, nitrides and polymers, with the latest generation of nanostructured lithium electrodes has brought the energy density of electrochemical capacitors closer to that of batteries.
Journal ArticleDOI
Advanced Materials for Energy Storage
TL;DR: This Review introduces several typical energy storage systems, including thermal, mechanical, electromagnetic, hydrogen, and electrochemical energy storage, and the current status of high-performance hydrogen storage materials for on-board applications and electrochemicals for lithium-ion batteries and supercapacitors.
Journal ArticleDOI
Conducting-polymer-based supercapacitor devices and electrodes
TL;DR: In-situ high-resolution transmission electron microscopy (HRTEM) studies of the structural transformations that occur during the synthesis of carbon-coated LiFePO4 and heat treatment to elevated temperatures were conducted in two different electron microscopes as discussed by the authors.
Journal ArticleDOI
Anchoring Hydrous RuO2 on Graphene Sheets for High-Performance Electrochemical Capacitors
TL;DR: In this paper, the authors demonstrate the importance and great potential of graphene-based composites in the development of high-performance energy-storage systems and demonstrate that the combined advantages of GSs and RuO 2 in such a unique structure are that the ROGSC-based supercapacitors exhibit high specifi c capacitance ( ∼ 570 F g − 1 for 38.3 wt% Ru loading), enhanced rate capability, excellent electrochemical stability ( ∼ 97.9% retention after 1000 cycles), and high energy density (20.1 Wh kg − 1 )
Journal ArticleDOI
R&D considerations for the performance and application of electrochemical capacitors
TL;DR: In this article, the development of lower cost carbons appropriate for use in electrochemical capacitors is underway by several speciality carbon suppliers. The goal is to reduce the cost of the carbon to $10-15/kg.