The features of the solvothermal synthesis of SnSe nanosheets and nanoflowers for supercapacitor applications

Abstract

In this article, orthorhombic SnSe nanoparticles (NPs) are prepared through hydrothermal method by using Olyelamine and Ethylene glycol solvent named as AN-(OA) and AN-(EG). The SEM and TEM images of the AN-(OA) and AN-(EG) NPs show sheet and flower-like shapes, respectively. The cyclic voltammograms (CV) and Galvanostatic charge/discharge (GCD) studies of AN-(OA) and AN-(EG) electrodes are investigated in 0.5 M of KOH electrolyte. The specific capacitance values calculated through CV curves are 443, 240, 172, 138, 118, 130 and 50 (F/g) of AN-(EG) electrode and 224, 116, 80, 62, 52, 31 and 20 (F/g) of AN-(OA) electrode at the scan rate of 10, 20, 30, 40, 50, 60 and 70 (mV/s), respectively. Further, the specific capacitance values calculated through GCD curves are 83, 66, 58 and 55 (F/g) of AN-(EG) electrode and 52, 33, 29 and 27 (F/g) of AN-(OA) electrode at the current density of 1, 2, 3 and 5 (A/g), respectively. The morphology plays a critical role in capacitive performance of NPs.