Octylamine Assisted Hydrothermal Growth of Silver Sulphide Nanoparticles as Efficient Electrode Material for Energy Storage Application

Mohapatra, Sanghamitra; Sarangi, Tapan Kumar; Panda, Rashmita; Naik, Kusha Kumar

doi:10.22034/abec.2025.723270

Octylamine Assisted Hydrothermal Growth of Silver Sulphide Nanoparticles as Efficient Electrode Material for Energy Storage Application

Document Type : Original Article

Authors

Sanghamitra Mohapatra

Tapan Kumar Sarangi

Rashmita Panda

Kusha Kumar Naik

P.G. Department of Physics, Berhampur University, Odisha, Pin:760007, India

10.22034/abec.2025.723270

Abstract

This study systematically investigates the electrochemical energy storage performance of hydrothermally synthesized silver sulfide (Ag₂S) nanoparticles as an advanced electrode material for supercapacitors. Structural, morphological, and optical analyses were conducted using X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-visible spectroscopy, confirming the successful synthesis and phase purity of Ag₂S nanoparticles. The electrochemical properties were evaluated in a three-electrode system using Na₂SO₄ electrolyte through cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS). The Ag₂S electrode exhibited a remarkable specific capacitance of 562.5 F/g, a high energy density of 145.8 Wh/kg, and a power density of 84 W/kg, demonstrating strong pseudocapacitive behavior with efficient charge storage capability. Furthermore, the electrode displayed excellent cyclic stability, retaining 90% of its initial capacitance even after 5000 charge-discharge cycles. These results highlight the immense potential of Ag₂S nanoparticles as a high-performance electrode material, contributing to the advancement of next-generation energy storage devices.

Keywords

Octylamine

Silver Sulphide

Nanoparticles

Supercapacitance

Hydrothermal

Subjects