Electrochemical Property of Honeycomb Type All-Solid-State Li Battery at High Temperature

Abstract

A performance at high temperature of all-solid-state battery with LiMn₂O₄/honeycomb Li_0.35La_0.55TiO₃/Li₄Mn₅O₁₂ configuration was examined. The charge and discharge capacities increased with test temperature until 100°C by favorable Li ion conductivity of electrolyte. At 120°C, deterioration of the performance was observed due to instability of electrode material. It is found that the all-solid-state battery can be operated until 100°C. The discharge capacity at 100°C was 74 µA h cm⁻² at current density of 100 µA cm⁻².