(207g) Functionalized Ionic Liquids and Zwitterionic Compounds as Electrolyte Additives for Lithium Batteries
- Conference: AIChE Spring Meeting and Global Congress on Process Safety
- Year: 2008
- Proceeding: 2008 Spring Meeting & 4th Global Congress on Process Safety
- Group: Emerging Energy Frontiers in Research and Innovation
- Time: Wednesday, April 9, 2008 - 4:00pm-4:20pm
Different types of ionic liquids and zwitterionic compounds containing carbonyl-functional groups were prepared and their electrochemical properties were investigated. FT-IR study clearly demonstrates that they are able to interact with Li+ ions through their carbonyl groups, which helps the electrochemical properties enhance. In addition, comparing with the cases of their corresponding alkyl-substituted relatives, their C-rate performance was much better upon their addition to to a non-aqueous electrolyte containing LiPF6, implying the positive role of the ester functional groups.