Preparation of 3D Ordered Macroporous Li⁺ Ion Conductive Ceramics

Abstract

In order to fabricate all solid-state rechargeable lithium battery with a high discharge capacity, a three-dimensional matrix consisting of solid electrolyte and active material has to be developed. We prepared Li_0.35La_0.55TiO₃ with an inverse opal structure by colloidal crystal templating method using mono-dispersed polystyrene beads (3 mm in diameter). After heat treatment at 1000 deg C, macroporous disk shape membrane with 10 mm size was successfully obtained. The membrane had porous structure and was crystallized.