Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 17, Issue 17, Pages 11161-11164Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cp01337b
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Funding
- DFG
- BMBF
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In this communication, we show that the combination of 1 M lithium bis(trifluoromethylsulfonyl)amide and 1-butyl-1-methylpyrrolidinium bis(fluorosulfonyl)amide (LiTFSI/[Py-1,Py-4]FSI) can be regarded as a possible stable electrolyte for IL based lithium ion batteries. We compare the charge-discharge results with the electrolyte 1 M LiTFSI in 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) amide ([Py-1,Py-4]TFSI) on an electrodeposited Ge electrode and show using a charge-discharge analysis and Raman spectroscopy that 1 M LiTFSI/[Py-1,Py-4]FSI is advantageous in maintaining the charge capacity as well as electrolyte stability at high current densities.
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