Transport properties for ionic liquids used in next generation high capacity batteries

Lithium ion;RTIL;Ionic liquids;Transport properties

George, Vyran ; Fuller, Thomas Chemical and Biomolecular Engineering Yushin, Gleb Koros, William Kohl, Paul Nenes, Athanasios ; Fuller, Thomas

University:Georgia Institute of Technology

Department:Chemical and Biomolecular Engineering

关键词: Lithium ion;    RTIL;    Ionic liquids;    Transport properties;   

Others  :  https://smartech.gatech.edu/bitstream/1853/55495/1/GEORGE-DISSERTATION-2015.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

Using room temperature ionic liquids (RTILs) as electrolytes in Li-ion battery systems provides important safety and performance benefits over the more volatile, combustible organic solvents currently used. However, in order to gain a more profound understanding of transport in these electrolytes, properties such as conductivity, transference numbers, and salt activity must be measured as a function of salt concentration. Experimental methods are proposed for calculating a complete set of transport properties for a room temperature ionic liquid system. These data are also used in conjunction with concentrated solution theory equations to develop a robust porous electrode model for advanced batteries. Furthermore, the effect of organic additives on the electrolyte conductivity, internal resistances and overall cell performance was studied for a RTIL-based electrolyte system.