Structural and Electrochemical Characterizations of Carbon Electrodes using Pure and Lithium Ion Containing Ionic Liquids

摘要

The development of ionic liquid based electrolytes and polymer gel electrolytes for use in Li-ion batteries necessitates the use of either pure metallic lithium as the anode or a carbon based anode,such as amorphous carbon or graphite.Previous work has already shown that the use of the A1C1_4 anion,one of the more common counter anions in the ionic liquids,results in the formation of a Li-Al alloy along the graphite-electrolyte surface,rather than true intercalation.Therefore,the ionic liquids studied for use in Li-ion batteries have moved to incorporate those which use fluorinated anions,such as BF_4~-,PF_6~- and bis-trifluoromethanesulfonylimide (TFSI~-).