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Preparation of mesoporous CoNiO2 hexagonal nanoparticles for asymmetric supercapacitors via a hydrothermal microwave carbon bath process
- Source :
- New Journal of Chemistry. 43:15066-15071
- Publication Year :
- 2019
- Publisher :
- Royal Society of Chemistry (RSC), 2019.
-
Abstract
- Mesoporous CoNiO2 (CNO) hexagonal nanoparticles are prepared via a hydrothermal microwave carbon bath process. The nanostructure and morphology of CNO NPs prepared at different hydrothermal temperatures are systematically studied and characterized. At the hydrothermal temperature of 140 °C, CNO hexagonal nanoparticles have a porous structure and a specific surface area of 53.56 m2 g−1. In addition, the as-prepared CNO electrode material exhibits a large capacitance of 801.00 F g−1 at a current density of 0.5 A g−1. The assembled CNO asymmetric supercapacitor shows a high energy density of 10.34 W h kg−1 at the power density of 300 W kg−1, which shows great potential as a novel electrode material in energy storage applications.
- Subjects :
- Supercapacitor
Nanostructure
Nanoparticle
chemistry.chemical_element
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Catalysis
Hydrothermal circulation
0104 chemical sciences
Chemical engineering
chemistry
Specific surface area
Materials Chemistry
0210 nano-technology
Mesoporous material
Carbon
Power density
Subjects
Details
- ISSN :
- 13699261 and 11440546
- Volume :
- 43
- Database :
- OpenAIRE
- Journal :
- New Journal of Chemistry
- Accession number :
- edsair.doi...........f65717201467fdcdf14e673602488b90