Facile synthesis of 3Li2S-P2S5:xLiCl:(1-x)LiI glass ceramic solid electrolyte for solid-state lithium-ion batteries

The 3Li(2)S-P2S5:xLiCl:(1-x)Lil solid electrolytes were prepared via solution process using acetonitrile, and crystallization was achieved by heating at 160 degrees C for 3 h. The crystalline nature and morphology of the prepared materials were studied using powder X-ray diffraction and field emission scanning electron microscope analysis. Cyclic voltammetry was performed to confirm the electrochemical stability of the electrolytes. The ionic conductivity of the prepared 3Li(2)S-P2S5:0.25LiCl:0.75LiI solid electrolyte was 1.32 x 10(-4)S cm(-1), at room temperature. In addition, the prepared 3Li(2)S-P2S5:0.25LiCl:0.75LiI solid electrolyte showed better electrochemical stability comparable to that of prepared pure 3Li(2)S-P2S5, and other Cl and I mixed solid electrolytes. (C) 2019 Elsevier B.V. All rights reserved.