Green synthesis and electrochemical characterization of rGOCuO nanocomposites for supercapacitor applications
- Title
- Green synthesis and electrochemical characterization of rGOCuO nanocomposites for supercapacitor applications
- Creator
- Sudhakar Y.N.; Hemant H.; Nitinkumar S.S.; Poornesh P.; Selvakumar M.
- Description
- Reduced graphene oxide (rGO) were prepared from graphene oxide (GO) by using piperine as a green reducing agent extracted from Piper nigrum. The obtained rGO had few defects and lacked connectivity between the layers. To overcome these defects, copper oxide (CuO) nanoparticles were synthesized ultrasonically and nanocomposites of rGOCuO were prepared. The conductivities of the rGO, CuO and rGOCuO nanocomposites were determined by AC impedance spectroscopy in different electrolytes. Morphology, composition and electronic structure of CuO, rGO and rGOCuO nanocomposites were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photon spectroscopy (XPS) and electrochemical techniques. Transmission electron microscopy (TEM) images portrait CuO as a fish caught in the net of rGO layers. The rGOCuO nanocomposite exhibiting lower resistance and higher capacitance was used in fabrication of supercapacitor electrodes. The specific capacitance of the fabricated supercapacitor was found to be 137Fg?1. The supercapacitor performance of the nanocomposite electrode is attributed to the synergistic effect of double-layer capacitance of rGO and redox capacitance of CuO nanoparticles. [Figure not available: see fulltext.] 2016, Springer-Verlag Berlin Heidelberg.
- Source
- Ionics, Vol-23, No. 5, pp. 1267-1276.
- Date
- 2017-01-01
- Publisher
- Institute for Ionics
- Subject
- CuO; Piperine; rGO; Supercapacitor
- Coverage
- Sudhakar Y.N., Department of Chemistry, Christ University, Bengaluru, India; Hemant H., Department of Chemistry, Manipal Institute of Technology, Manipal University, Manipal, Karnataka, India; Nitinkumar S.S., Department of Chemistry, Manipal Institute of Technology, Manipal University, Manipal, Karnataka, India; Poornesh P., Department of Physics, Manipal Institute of Technology, Manipal Universiry, Manipal, Karnataka, India; Selvakumar M., Department of Chemistry, Manipal Institute of Technology, Manipal University, Manipal, Karnataka, India
- Rights
- All Open Access; Bronze Open Access
- Relation
- ISSN: 9477047
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Sudhakar Y.N.; Hemant H.; Nitinkumar S.S.; Poornesh P.; Selvakumar M., “Green synthesis and electrochemical characterization of rGOCuO nanocomposites for supercapacitor applications,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 23, 2025, https://archives.christuniversity.in/items/show/17119.