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Quaternary‐ammonium Based Ionic Liquid Mixed with Organic Solvent Electrolyte System
Author(s) -
Lin ChunYun,
Chang ChiaChin
Publication year - 2012
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201200156
Subject(s) - ionic liquid , chemistry , electrolyte , ethylene carbonate , cyclic voltammetry , inorganic chemistry , dimethyl carbonate , dielectric spectroscopy , electrochemistry , cathode , organic chemistry , electrode , methanol , catalysis
Ionic liquids (ILs) have been proposed as electrolytes for long‐lived and safe LIBs, since they are nonflammability and have low volatility. The interactions between of cathodes (as olivine LiFePO 4 or layered LiNi 1/3 Mn 1/3 Co 1/3 O 2 (NMC)) and ionic liquid mixed with organic solvent electrolyte were investigated by cyclic voltammetry, electrochemical impedance spectroscopy (EIS), coin cell test, and scanning electron microscope (SEM). The mixed electrolyte contains ethylene carbonate (EC), dimethyl carbonate (DMC) and ionic liquid such as bis(trifluoromethanesulfonyl)imide (TFSI) and tetraethylammonium (N2222). The results show that the LiFePO 4 cathode in this mixed electrolyte had better cycling performance than the NMC cathode.