A Study on Thermophysical Properties of Materials for Li-ion Batteries.

概要

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The authors measured thermal diffusivity of the positive and the negative electrode materials for a Li-ion battery by using the laser flush method (Shinku Riko, TC-3000). The size of specimens were φ10mm x 1mm, and they were immersed in the mixed electrolyte of EC/DEC (1:1 in volume) for 12 hours. And also, thermophysical properties of composite sheets of the positive and the negative electrodes were estimated.Thermal simulations were carried out for a disk type 100Ah scale Li-ion batteries by using parameters and thermophysical properties investigated or measured in this study. By comparing the estimated temperatures of model A-model D, treatment of thermophysical properties of battery sheets has been discussed. And also, improvement in temperature increase of batteries by using composite electrodes materials has been shown.
日本熱物性学会の論文