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| Type |
Poster Presentation |
| Area |
Physical Chemistry |
| Room No. |
Exhibition Hall 2+3 |
| Time |
10월 20일 (금요일) 13:00~14:30 |
| Code |
PHYS.P-117 |
| Subject |
Infrared spectroscopy of Electrolyte in Lithium-Ion Batteries |
| Authors |
Minju Kim, kyungwon Kwak*, MINHAENG CHO*
Department of Chemistry, Korea University, Korea
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| Abstract |
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 to increase the efficiency and stability. To find out the maximum efficiency condition of battery, researchers measure the conductivity by exchanging component of electrodes and electrolytes. According to various measurements and researches, it is believed that molecular details are essential to understand the chemistry inside of the LIB. In other words, small changes in molecular structure seems to affect much to the performance of LIB. Moreover, these observations can’t be explained by macroscopic physical properties like dielectric constant or viscosity. To study these phenomena, we observe microscopic interaction of electrolytes, how solvent molecules interact with lithium ion and how they transfer it, and how these results influence on the conductivity of battery therefore.
For this study, we use infrared spectroscopy because infrared absorption is highly sensitive to the change of environment around Li+ ion. With salt concentration dependence, mixing ratio between main and co-solvent, and investigation low frequency mode, we can investigate the effect of salt exchange and solvent exchange. This will provide molecular information about the electrolytes for new advanced battery system.
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| E-mail |
kmj5504@korea.ac.kr |
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120th General Meeting of the KCS