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Metallic Layered Polyester Fabric Enabled Nickel Selenide Nanostructures as Highly Conductive and Binderless Electrode with Superior Energy Storage Performance
- Source :
- Advanced Energy Materials. 7:1601362
- Publication Year :
- 2016
- Publisher :
- Wiley, 2016.
-
Abstract
- Highly flexible and conductive fabric (CF)-supported cauliflower-like nickel selenide nanostructures (Ni3Se2 NSs) are facilely synthesized by a single-step chronoamperometry voltage-assisted electrochemical deposition (ECD) method and used as a positive electrode in supercapacitors (SCs). The CF substrate composed of multi-layered metallic films on the surface of polyester fibers enables to provide high electrical conductivity as a working electrode in ECD process. Owing to good electrical conductivity, high porosity and intertwined fibrous framework of CF, cauliflower-like Ni3Se2 NSs are densely integrated onto the entire surface of CF (Ni3Se2 NSs@CF) substrate with reliable adhesion by applying a chronoamperometry voltage of −1.0 V for 240 s. The electrochemical performance of the synthesized cauliflower-like Ni3Se2 NSs@CF electrode exhibits a maximum specific capacity (CSC) of 119.6 mA h g−1 at a discharge current density of 2 A g−1 in aqueous 1 m KOH electrolyte solution. Remarkably, the specific capacity of the same electrode is greatly enhanced by introducing a small quantity of redox-additive electrolyte into the aqueous KOH solution, indicating the CSC≈251.82 mA h g−1 at 2 A g−1 with good capacity retention. Furthermore, the assembled textile-based asymmetric SCs achieve remarkable electrochemical performance such as higher energy and power densities, which are able to light up different colored light-emitting diodes.
- Subjects :
- Supercapacitor
Working electrode
Materials science
Renewable Energy, Sustainability and the Environment
Nickel selenide
02 engineering and technology
Substrate (electronics)
Electrolyte
Chronoamperometry
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
0104 chemical sciences
chemistry.chemical_compound
Chemical engineering
chemistry
Electrode
General Materials Science
0210 nano-technology
Subjects
Details
- ISSN :
- 16146832
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- Advanced Energy Materials
- Accession number :
- edsair.doi...........0191108ecf52955d7a06ecb723a0317a