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Particle and Aerosol Research
Vol. 16, No. 4, December 2020, Pages 95-105
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ISSN : 1738-8716 (Print)
ISSN : 2287-8130 (Online)
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Preparation of V2O5-Graphene Composites using Aerosol Process
for Supercapacitors Application
Chongmin Lee1), and Hee Dong Jang1),2) *
1)Resources Utilization Research Center, Korea Institute of Geoscience and Mineral Resources
2)Department of Nanomaterials Science and Engineering, University of Science and Technology
*Corresponding author.
Tel.: +82-42-868-3612, E-mail: hdjang@kigam.re.kr
Received 30 November 2020, Revised 10 December 2020, Accepted 14 December 2020, Available online 31 December 2020
https://dx.doi.org/10.11629/jpaar.2020.16.4.095
Abstracts
Vanadium Pentoxide (V2O5) has been emerged as alternative electrode materials for supercapacitors due to their low
cost, natural abundance, and environmental friendliness. Graphene (GR) loaded with V2O5 can exhibit enhanced
specific capacitance. In this study, we present three-dimensional (3D) crumpled graphene (CGR) decorated with V2O5.
The V2O5-graphene composites were synthesized from a colloidal mixture of graphene oxide (GO) and Ammonium
metavanadate (NH4VO3), via aerosol spray drying and post heat treatment process. The average size of composite was
ranged from 1.82 to 4.6 ¥ìm. Morphology of the composite changed from a crumpled paper ball to spherical ball
having relatively smooth surface as the content of V2O5 increased in the composites. The electrochemical performance
of the V2O5-graphene composites was examined. The V2O5-graphene composite electrode showed the specific
capacitance of 312 F/g. In addition, the device possessed acceptable cyclic stability, with 84% after 2000 cycles at 2
A/g. These outstanding properties are expected to make the composites prepared in this study as promising electrode
materials for supercapacitor applications.
Keywords
aerosol process, V2O5, crumpled graphene, composites, supercapacitor
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