Thermal Conductivity Measurement Technology of Electrode Sheets for Lithium Ion Batteries with Liquid Electrolyte

Abstract

We developed a thermal conductivity measurement system using a high-stiffness linear-motion guide and measured Li-ion battery electrodes which sealed within aluminum-laminated films. The apparent thermal conductivity of the battery electrode, which was measured at a temperature from minus several degrees to approximately 60°C, was from 1.1 to 1.4 W/(m･K) in the cross-plane direction, and from 37 to 38 W/(m･K) in the in-plane direction.