Quantum dots Ni/SnSe symmetrical electrodes for future supercapacitors and data storage devices
Document Type
Article
Publication Date
2-1-2025
Abstract
This study synthesizes quantum dots Ni/SnSe nanoparticles (NPs) using the precipitation technique with Ni-ion variations named NSS1, NSS2, NSS3, NSS4, NSS5, and NSS6 NPs. The synthesized NPs are characterized through different experimental methods. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) confirm the star-like flower and heterostructure nanospherical shapes of NSS1, NSS2, and NSS3 NPs. The X-ray photoelectron spectroscopy (XPS) shows the binding energy of Sn, Se, and Ni elements confirming the successful doping of Ni ions to the lattice of the SnSe compound. The Brunauer-Emmett-Teller (BET) analysis determines the increase in the surface area from 79 m2/g to 171 m2/g for NSS4 to NSS5 NPs making it suitable for supercapacitor and data storage devices. The increasing trend of specific capacity, capacitive retention, and coulombic efficiency of 84 % for quantum dot Ni/SnSe electrodes determine its ability for supercapacitor application. Further, the Raman and Fourier-transform infrared (FTIR) spectroscopy peaks observed for the NSS5 electrode after the cyclic stability explain its stability used as the symmetrical supercapacitor electrodes. The increased ferromagnetic behavior of the NSS1, NSS2, NSS3, NSS4, NSS5, and NSS6 NPs determines its tendency toward data storage applications.
Keywords
Precipitation technique, Supercapacitors, Data storage applications
Divisions
PHYSICS
Funders
BOLD Refresh Postdoctoral fellowship [Grant No: 10791206],King Saud University [Grant No: RSPD2025R956],SATU Joint Research Grant, University Malaya [Grant No: ST033-2019; ST038-2023]
Publication Title
IInternational Journal of Hydrogen Energy
Volume
103
Publisher
Pergamon-Elsevier Science Ltd
Publisher Location
THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND