TY - JOUR
T1 - The preparation of quaternary ammonium-based ionic liquid containing a cyano group and its properties in a lithium battery electrolyte
AU - Egashira, Minato
AU - Okada, Shigeto
AU - Yamaki, Jun Ichi
AU - Dri, Diego Alejandro
AU - Bonadies, Francesco
AU - Scrosati, Bruno
N1 - Funding Information:
Part of this work has been carried out with the financial support of MIUR-COFIN 2002 under the project “Nanostructured electrode and electrolyte materials for advanced lithium batteries”. Another part of this study has been financially supported by CREST of Japan Science and Technology Agency (JST).
PY - 2004/11/15
Y1 - 2004/11/15
N2 - A room temperature ionic liquid consisting of N,N,N,N,-cyanomethyl trimethyl ammonium (CTMA) cation and bis(trifluoromethane sulfone)imide (TFSI) anion was newly synthesized, and its electrochemical properties were investigated. This ionic liquid has a melting point of 35°C and an order of conductivity of 10-4 S cm-1. Lithium deposition/ dissolution tests in 0.2 mol dm-3 LiTFSI/CTMATFSI electrolytes showed an improved cycle behavior compared with that of a Li electrolyte based on a tetraalkylammonium ionic liquid without a cyano group. It is suggested that such an improvement may be associated with the formation of a protective film on the lithium surface. Introducing a proper functional group is suggested to be effective to improve the interfacial properties of ionic liquid.
AB - A room temperature ionic liquid consisting of N,N,N,N,-cyanomethyl trimethyl ammonium (CTMA) cation and bis(trifluoromethane sulfone)imide (TFSI) anion was newly synthesized, and its electrochemical properties were investigated. This ionic liquid has a melting point of 35°C and an order of conductivity of 10-4 S cm-1. Lithium deposition/ dissolution tests in 0.2 mol dm-3 LiTFSI/CTMATFSI electrolytes showed an improved cycle behavior compared with that of a Li electrolyte based on a tetraalkylammonium ionic liquid without a cyano group. It is suggested that such an improvement may be associated with the formation of a protective film on the lithium surface. Introducing a proper functional group is suggested to be effective to improve the interfacial properties of ionic liquid.
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U2 - 10.1016/j.jpowsour.2004.06.022
DO - 10.1016/j.jpowsour.2004.06.022
M3 - Article
AN - SCOPUS:8344222851
VL - 138
SP - 240
EP - 244
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
IS - 1-2
ER -
