Low-Cost Raw Materials Synthesized Na _2.9375PS _3.9375Cl _0.0625 Solid Electrolyte

Abstract

Na₃PS₄-based materials, which have relatively high conductivities and favorable mechanical properties, make promising Na-ion solid electrolytes for realizing all-solid-state sodium batteries. In this study, Na_3-xPS_4-xCl_x solid electrolytes power is prepared by a mechanical ball milling process and subsequent heat treatment process using low-cost Na, NaCl, P₂S₅ and S as raw materials. In addition, we investigate the conductivity and electrochemical of the composite solid electrolyte with polyethylene oxide-NaClO₄. The results show that Na_3-xPS_4-xCl_x solid electrolyte heated at 500℃ with polyethylene oxide-NaClO₄ exhibits Na-ion conductivity of 8.75×10^-4 S cm^-1.

Keywords: Keywords: Solid electrolyte, Low-cost raw materials, Conductivity