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| Type |
Poster Presentation |
| Area |
Electrochemistry |
| Room No. |
Event Hall |
| Time |
4월 20일 (금요일) 11:00~12:30 |
| Code |
ELEC.P-648 |
| Subject |
Surface modified nanosalts as an organic electrolyte additive |
| Authors |
Yong Joo Kim
Chemical and Biological Engineering, Hanbat National University, Korea |
| Abstract |
Lithium sulfonyl silica (LSS) was synthesized by replacing the surface -OH group in fumed silica with (CH2)3SO3Li and adopted as electrolyte additive for lithium ion battery. 3 wt. % of the synthesized particles in 1 M LiPF6 (EC/DMC=1:1) showed improved ionic conductivity and potential window over the pristine electrolyte. The discharge capacity of the LiCoO2/graphite is particularly enhanced with the addition of LSS at higher C-rates due to the enhanced ionic conductivity at room temperature. The LiCoO2/graphite cells using 1.0 M LiPF6/ EC / DMC (1: 1) and 1.0 M LiTFSI / EC / DMC (1: 1) with the additive also showed superior performance for the self-discharge test carried out at 45 ℃ for 200 days. These positive impacts of LSS on LiCoO2/graphite cells warrant its use in lithium ion batteries. |
| E-mail |
kimyj@hanbat.ac.kr |
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121st General Meeting of the KCS