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Hydrothermal fabrication of rGO supported AgFeO2 nanocomposite electrode with outstanding performance for supercapacitor and biosensor application
Journal article   Peer reviewed

Hydrothermal fabrication of rGO supported AgFeO2 nanocomposite electrode with outstanding performance for supercapacitor and biosensor application

Elahi Bukhsh, Asghar Nazir, Meznah M. Alanazi, Shaimaa A.M. Abdelmohsen, Hussain Sawwan, Waqas Ul Arifeen, Mohammed M Fadhali, Rizwan ul Hassan and Reda A. Haggam
Chemical physics letters, v 893, 142783
Jul 2026
DOI: https://doi.org/10.1016/j.cplett.2026.142783
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Abstract

AgFeO2/rGO Biosensor Electrode Hydrothermal method KOH electrolyte Supercapacitors
Researchers are looking for energy storage devices with improved capacitance and hybrid technology. Supercapacitors (SCs) are one of the storage devices that can fulfill the modern demand of energy because they can be used in electric vehicles and portable gadgets due to their rapid charging and discharging nature and long cycle life. In SCs, electrode plays a pivotal role. Here, AgFeO2/rGO electrode material for supercapacitor was fabricated via hydrothermal method. The X-ray diffraction and Brunauer Emmett Teller confirmed crystalline nature and high surface are of AgFeO2/rGO electrode. The electro chemical evaluation performed in KOH via 3-electrode where nickle foam served as substrate. According to findings, capacitance of pure AgFeO2 and AgFeO2/rGO nanocomposite was 412 and 768 C/g, correspondingly. While, from two electrode setup, it demonstrate Cs (95 C/g) with Ed (35.76 Wh/kg) and Pd (820 W/kg). AgFeO2/rGO hybrid exhibits a lower solution resistance (0.72 Ω) than AgFeO2 (0.86 Ω), according to Nyquist plot. This study demonstrates that AgFeO2/rGO nanocomposite is a promising alternative for high-performance storage devices and for biosensors. Because of its affordability, low cost, and exceptional capacitance capabilities, it is a viable candidate for energy storage technologies. • AgFeO2/rGO nanocomposite was synthesized via a hydrothermal route. • BET results indicated an enhanced surface area (SA) of nanocomposite. • The composite demonstrated exceptional specific capacitance (Cs). • Two electrode setup shows Ed (35.76 Wh/kg) and Pd (820 W/kg). • Asymmetric capacitor demonstrated outstanding stability after 3000th cycle.

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