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A facile synthesis of self-assembling reduced graphene oxide/cobalt carbonate hydroxide papers for high-performance supercapacitor applications
- Source :
- Journal of Materials Science: Materials in Electronics. 30:159-166
- Publication Year :
- 2018
- Publisher :
- Springer Science and Business Media LLC, 2018.
-
Abstract
- Electrode materials as an important component for the supercapacitors (SC) mainly undertake energy storage. Hence, the research hotspots in the SC fields are focused on the active materials of the electrode. In this study, we have provided a facile synthesis method to prepare reduced graphene oxide (RGO) and cobalt carbonate hydroxide (Co(CO3)0.5(OH)0.11·H2O) nanorod composites. The RGO films were obtained by vacuum filtration of GO papers and hydrothermal method. And during this hydrothermal, Co(CO3)0.5(OH)0.11·H2O nanorods also grow on the surface of RGO films. The as-fabricated RGO/Co(CO3)0.5(OH)0.11·H2O composites are characterized by SEM, EDS, XRD measurement. According to the electrochemical research results, the RGO/Co(CO3)0.5(OH)0.11·H2O electrodes own an ultrahigh volumetric capacitance of 1627 F cm−3 at a current density of 0.5 A g−1. Besides, the energy density of the symmetrical supercapacitor (SSc) assembled with the RGO/Co(CO3)0.5(OH)0.11·H2O electrode material is 9.22 mW h cm−3, and the capacity can be maintained 100.0% after 10,000 cycles when the composite material at the current density of 1 A g−1, these promote an efficient electrode material for electrochemical supercapacitor applications.
- Subjects :
- 010302 applied physics
Supercapacitor
Materials science
Graphene
Oxide
chemistry.chemical_element
Condensed Matter Physics
01 natural sciences
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
law.invention
chemistry.chemical_compound
chemistry
Chemical engineering
law
0103 physical sciences
Electrode
Hydroxide
Hydrothermal synthesis
Nanorod
Electrical and Electronic Engineering
Cobalt
Subjects
Details
- ISSN :
- 1573482X and 09574522
- Volume :
- 30
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Science: Materials in Electronics
- Accession number :
- edsair.doi...........86b7465f046509a784adb2883f6f75b0