Symmetric Supercapacitors based on Reduced Graphene Oxide/Multi-walled Carbon Nanotubes/Cobalt Oxide Ternary Composites
- Title
- Symmetric Supercapacitors based on Reduced Graphene Oxide/Multi-walled Carbon Nanotubes/Cobalt Oxide Ternary Composites
- Creator
- James N.; Simon S.; Rajeevan S.; George S.C.; Balakrishnan S.P.
- Description
- Ternary nanocomposites of reduced graphene oxide/multi-walled carbon nanotubes/cobalt oxide nanoparticles (rGO/MWCNT/Co3O4) were synthesized employing a facile hydrolysis method with subsequent heat treatment. The good electrical conductivity and remarkable carrier mobility of rGO and MWCNTs make them a suitable matrix for hybrid supercapacitors, and their composites with metal oxides exhibit enhanced electrochemical properties due to the advantages of the synergistic contribution and the integration of different dimensionalities. The binary counterparts of Co3O4 with GO or MWCNTs were also produced using the same technique to gain additional insight into the characteristics of the individual components. The structural and morphological properties of the composites were analyzed using various analytical techniques. The electrochemical behaviors of the prepared composites were investigated using cyclic voltammetry (CV), galvanostatic chargedischarge (GCD), and electrochemical impedance spectroscopy (EIS) in 1 M H2SO4. A platinum electrode modified with the rGO/MWCNT/Co3O4 composite displayed a remarkable specific capacitance of 922 F g?1 at a current density of 1 A g?1 composite with a negligible capacitance drop after 2000 cycles. The symmetric supercapacitor fabricated using the rGO/MWCNT/Co3O4 composite showed an energy density of 32.2 Wh Kg?1 at 1 A g?1, and the corresponding power density was 2000 W Kg?1. The supercapacitor fabricated using the composite displayed 83% capacitance retention after 2000 cycles at 3 A g?1 composite. 2023 Taylor & Francis Group, LLC.
- Source
- Journal of Macromolecular Science, Part B: Physics, Vol-63, No. 9, pp. 750-771.
- Date
- 2024-01-01
- Publisher
- Taylor and Francis Ltd.
- Subject
- cobalt oxide; graphene oxide; multi-walled carbon nanotubes; symmetric supercapacitors
- Coverage
- James N., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, India; Simon S., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, India; Rajeevan S., Centre for Nanoscience and Technology, Amal Jyothi College of Engineering, Kottayam, India; George S.C., Centre for Nanoscience and Technology, Amal Jyothi College of Engineering, Kottayam, India; Balakrishnan S.P., Department of Chemistry, CHRIST (Deemed to be University), Bengaluru, India
- Rights
- Restricted Access
- Relation
- ISSN: 222348; CODEN: JMAPB
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
James N.; Simon S.; Rajeevan S.; George S.C.; Balakrishnan S.P., “Symmetric Supercapacitors based on Reduced Graphene Oxide/Multi-walled Carbon Nanotubes/Cobalt Oxide Ternary Composites,” CHRIST (Deemed To Be University) Institutional Repository, accessed April 20, 2025, https://archives.christuniversity.in/items/show/13771.