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Preparation of surface modified nanosalts and its application to an organic electrolyte additive
4th International Conference on Electrochemistry
Yong Joo Kim and Sang Jun Kim
Hanbat National University, South Korea
Posters & Accepted Abstracts: Biosens J
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 batteriesBiography
Yong Joo Department of Applied Chemistry and Biotechnology, Hanbat National University San 16-1.
Email:kimyj@hanbat.ac.kr
