Title:
Transport properties for ionic liquids used in next generation high capacity batteries
Transport properties for ionic liquids used in next generation high capacity batteries
Author(s)
George, Vyran
Advisor(s)
Fuller, Thomas F.
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Abstract
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.
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Date Issued
2015-05-13
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Text
Resource Subtype
Dissertation