Preparation of NASICON-Type Nanosized Solid Electrolyte Li1.4Al0.4Ti1.6(PO4)3 by Evaporation-Induced Self-Assembly for Lithium-Ion Battery

摘要

A simple and practicable evaporation-induced self-assembly (EISA) method is introduced for the first time to prepare nanosized solid electrolyte Li~(1.4)Al~(0.4)Ti~(1.6)(PO~(4))~(3) (LATP) for all-solid-state lithium-ion batteries. A pure Na_(+) super ion conductor (NASICON) phase is confirmed by X-ray diffraction (XRD) analysis, and its primary particle size is down to 70?nm by optimizing evaporation rate of the solvent. Excellent room temperature bulk and total lithium-ion conductivities of 2.09?×?10_(?3)?S?cm_(?1) and 3.63?×?10_(?4)?S?cm_(?1) are obtained, with an ion-hopping activation energy as low as 0.286?eV.