Center for Molecular Spectroscopy and Dynamics

2017 119th KCS Meeting

Lithium ion battery(LIB) is indispensable material in daily life for the portable energy storage devices. For this reason, various studies of LIB have been steadily done specially in the efficiency of this battery. In this investigation, We focus on electrolytes, which is a major component of LIB system, used for transporting Li ion between cathode and anode. There are many researches how electrolytes, in general carbonates, form solvation structure and are involved in the mobility of Li ion. We measure the FTIR spectrum (1) single solvent system of cyclic or acyclic carbonate (2) binary solvent system of mixture of cyclic and acyclic carbonate depending on the concentration of LiPF6, the basic Li ion salt, setting maximum ionic conductivity as a standard that represents the performance of LIB. Through this study of FTIR spectroscopy, We recheck previous researches and find the supporting data about relation of solvation sheath with LIB efficiency.