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

Xingang Liu; Ju Fu; Chuhong Zhang

doi:10.1186/s11671-016-1768-z

Preparation of NASICON-Type Nanosized Solid Electrolyte Li_1.4Al_0.4Ti_1.6(PO₄)₃ by Evaporation-Induced Self-Assembly for Lithium-Ion Battery

Nanoscale Res Lett. 2016 Dec;11(1):551. doi: 10.1186/s11671-016-1768-z. Epub 2016 Dec 15.

Authors

Xingang Liu¹, Ju Fu¹, Chuhong Zhang²

Affiliations

¹ State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, China.
² State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu, 610065, China. chuhong.zhang@scu.edu.cn.

Abstract

A simple and practicable evaporation-induced self-assembly (EISA) method is introduced for the first time to prepare nanosized solid electrolyte Li_1.4Al_0.4Ti_1.6(PO₄)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.

Keywords: Evaporation-induced self-assembly (EISA); Lithium-ion battery; Nano-LATP; Solid electrolyte.