Enhanced electrical properties of CuO:CoO decorated with Sm2O3 nanostructure for high-performance supercapacitor
- Title
- Enhanced electrical properties of CuO:CoO decorated with Sm2O3 nanostructure for high-performance supercapacitor
- Creator
- Adimule V.; Bhat V.S.; Joshi R.; Batakurki S.; Hegde G.; Yallur B.C.
- Description
- In the present investigation, we have synthesized samarium (Sm) nanoparticles (NPs) and anchored them onto the surface of CuO:CoO nanostructure (NS) by utilizing a simple chemical precipitation method. Nanostructures (NS) were characterized utilizing powdered X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron spectroscopy (SEM), transmission electron spectroscopy (TEM), UVvisible spectroscopy (UVVis), and BrunauerEmmettTeller (BET) studies. Resulting Smx CuO: CoO (x = 1%, 5%, 10%, and 12%) NS were investigated for their anomalous electrical and supercapacitive behavior. NS energy storage performance was experimentally determined using cyclic voltammetry (CV), galvanostatic chargedischarge (GCD), and electrochemical impedance spectroscopy (EIS). Sm10%CuO:CoO exhibited better electrochemical response than other samples and showed a maximum specific capacitance of 283.6F/g at 0.25A/g in KOH electrolyte. However, contrary to our expectation, NS displayed rectifying nature in I-V, intercalative nature in C-V, and polaronic permittivity in all concentrations of Sm2O3 doping as compared with undoped CuO:CoO NS. The outstanding properties of Smx CuO:CoO NS are attributed to the synergy of high charge mobility of Sm NPs, leading to significant variation in dielectric permittivity, currentvoltage (I-V) response, capacitancevoltage (C-V) behavior, with the formation of Sm3+ ionic cluster. The clusters lead to a change in dipole moment creating a strong local electric field. Additionally, a CR2032 type symmetric supercapacitor cell was fabricated using Sm10%CuO:CoO, which exhibited a maximum specific capacitance of 67.4F/g at 0.1A/g. The cell was also subjected to 5000 GCD cycles where it retained 96.3% Coulombic efficiency. Graphical Abstract: [Figure not available: see fulltext.] 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
- Source
- Journal of Solid State Electrochemistry, Vol-27, No. 2, pp. 511-529.
- Date
- 2023-01-01
- Publisher
- Springer Science and Business Media Deutschland GmbH
- Subject
- CuO:CoO; Electrical properties; Energy storage; Nanostructures; Samarium oxide; Super capacitor
- Coverage
- Adimule V., Department of Chemistry, Angadi Institute of Technology and Management (AITM), Savagaon Road, Karnataka, Belagavi, 590009, India; Bhat V.S., Centre for Nano-Materials and Displays (CND), B.M.S. College of Engineering, Bull Temple Road, Basavanagudi, Bangalore, 560 019, India; Joshi R., Department of Physics, School of Physical Sciences, Central University of Karnataka, Aland Road, Karnataka, Kadaganchi, Gulbarga, 585311, India; Batakurki S., Department of Chemistry, M. S. Ramaiah University of Applied Sciences, Bangalore, 560054, India; Hegde G., Centre for Adavanced Research and Development (CARD), CHRIST (Deemed to be University), Hosur Rd, Bhavani Nagar, S.G. Palya, Karnataka, Bangalore, 29, India, Department of Chemistry, CHRIST (Deemed to be University), Hosur Rd, Bhavani Nagar, S.G. Palya, Karnataka, Bangalore, 29, India; Yallur B.C., Department of Chemistry, M S Ramaiah Institute of Technology, Karnataka, Bangalore, 560054, India
- Rights
- Restricted Access
- Relation
- ISSN: 14328488
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Adimule V.; Bhat V.S.; Joshi R.; Batakurki S.; Hegde G.; Yallur B.C., “Enhanced electrical properties of CuO:CoO decorated with Sm2O3 nanostructure for high-performance supercapacitor,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/14427.