TiS2 As Negative Electrode Material for Sodium-Ion Electric Energy Storage Devices

Abstract

Abstract Titanium disulfide (TiS 2 ) was synthesized by a simple solid phase method. The physical properties of TiS 2 were investigated using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and energy dispersive X-ray spectroscopy (EDX). Scanning and transmission electron microscopy (SEM and TEM) were used to study the structural and morphological characteristics. The synthesized TiS 2 was applied as negative electrode material for TiS 2 /graphite electric storage devices with organic electrolytes based on Na + -ions. The electrochemical methods were used to characterize the charge storage mechanism of TiS 2 . The TiS 2 /graphite electric energy storage device possessed a working voltage of 3.5 V. The fabricated device showed relatively high performance rate and excellent cycle stability in electrochemical tests.