Journal article
A novel CoAl2O4/rGO nanocomposite electrode with superior electrochemical characteristics for supercapacitor devices
Ceramics international, v 51(30), pp 62519-62528
01 Dec 2025
Abstract
The widespread usage of fossil fuels contributes to environment ecological pollution and scarcity of energy reserves. Thereby, it is essential to build eco-friendly and advanced energy storage systems and supercapacitor is one of the best energy storage devices. In this study, CoAl2O4/rGO nanocomposite was successfully fabricated by hydrothermal technique for supercapacitor applications. The homogeneous distribution of CoAl2O4 nanoflakes over rGO sheets was established by scanning electron microscopy (SEM), while Brunauer-Emmett-Teller (BET) analysis revealed high surface area of 52.4 m2 g- 1. The electrochemical behavior was evaluated via threeelectrode system in 3 M KOH electrolyte. The CoAl2O4/rGO nanocomposite exhibited outstanding specific capacitance of 1355.3 F g- 1 at 1 A g- 1, along with energy density of 33.95 Wh kg- 1 and power density of 212.35 W kg- 1. Electrochemical impedance spectroscopy (EIS) indicated low series resistance (Rs) of 0.83 Omega, signifying excellent electron transport capability and charge transfer ability. Furthermore, CoAl2O4/rGO demonstrated superior cycling stability up to 11000th cycles. The improved electrochemical properties is ascribed to synergistic effect of CoAl2O4 and rGO, which provide large interfacial area and efficient charge transport pathways. This work presents cost-effective route for developing high-performance nanocomposite electrodes, offering promising potential for future energy storage applications.
Metrics
1 Record Views
Details
- Title
- A novel CoAl2O4/rGO nanocomposite electrode with superior electrochemical characteristics for supercapacitor devices
- Creators
- Aqsa Batool - Govt Grad Coll, Dept Phys, Taunsa Sharif 32100, PakistanSundas Rani - University of TsukubaAsghar Nazir - Drexel UniversityMuneerah Alomar - Princess Nourah bint Abdulrahman UniversityH. H. Somaily - King Khalid University
- Publication Details
- Ceramics international, v 51(30), pp 62519-62528
- Publisher
- Elsevier
- Number of pages
- 10
- Grant note
- R.G.P.2/15/46 / Deanship of Scientific Research at King Khalid University; King Khalid University; King Saud University
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:001636481500001
- Scopus ID
- 2-s2.0-105023680840
- Other Identifier
- 991022197315804721