WS₂/Graphene Composite as Cathode for Rechargeable Aluminum-Dual Ion Battery

Tungsten disulfide/graphene nano-sheets (WS 2 /G) composite is prepared by the ultra-sonication process and applied as a cathode for rechargeable Aluminum-dual ion battery (ADIBs). X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), Fourier transform-infra red spectroscopy (FT-IR) and Raman spectroscopy are used to examine the morphology and architecture of the composite. WS 2 /G composite displays good electrochemical performance with remarkable specific capacity (152 mA h/g) and good cyclic stability (150 cycles). The aluminum-dual ion intercalation mechanism in the composite is analyzed by XRD, Raman and XPS analysis. WS 2 /G composite exhibits better electrochemical results than neat WS 2 , owing to the synergistic effect between highly conductive graphene and WS 2 .