N-Allyl-N-methylpiperidinium bis(trifluoromethanesulfonyl)imide-A film forming ionic liquid for graphite anode of Li-ion batteries

0387933 - ÚACH 2013 RIV GB eng J - Článek v odborném periodiku
Reiter, Jakub - Nádherná, M.
N-Allyl-N-methylpiperidinium bis(trifluoromethanesulfonyl)imide-A film forming ionic liquid for graphite anode of Li-ion batteries.
Electrochimica acta. Roč. 71, JUNE (2012), s. 22-26. ISSN 0013-4686. E-ISSN 1873-3859
Grant CEP: GA AV ČR(CZ) KJB200320801; GA AV ČR KJB200320901
Výzkumný záměr: CEZ:AV0Z40320502
Klíčová slova: Bis(trifluoromethansulfonyl)imide * Unsaturated piperidinium ionic liquid * Graphite * Solid electrolyte interface * Lithium-ion battery
Kód oboru RIV: CG - Elektrochemie
Impakt faktor: 3.777, rok: 2012

An ionic liquid. N-allyl-N-methylpiperidinium bis(trifluoromethanesulfonyl)imide PP13 center dot TFSI has been successfully tested as a solid electrolyte interface (SEI) forming agent for graphite composite anode at elevated temperature of 55 degrees C in a purely ionic liquid-based electrolyte: 0.5 m LiTFSI in a mixture of PP13 center dot TFSI-PP13TFSI (20-80 wt.%) The reversible discharge capacity was 340-350 mAh g(-1) with only a small irreversible capacity loss per cycle. The electrochemical polymerisation of the allylic double bond participates on the SEI formation on the graphite surface. In the absence of unsaturated ionic liquid, the piperidinium cation is co-intercalated into graphite and causes its exfoliation with permanent loss of capacity. The electrolyte is thermally stable up to 320 degrees C and reasonably conductive (2.4 mS cm(-1) at 55 degrees C).
Trvalý link: http://hdl.handle.net/11104/0216801