Li/LiCoO2 cell performance using ionic liquids composed of N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium - Effect of anionic structure

H. Matsumoto, H. Sakaebe, K. Tatsumi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

To elucidate the reason why a rate performance of a Li/LiCoO2 cell with the use of FSA ([(FSO2)2N]-)-ILs gave best results compare with the other ILs, we investigated anionic structure dependence of thermal properties, viscosity, conductivity, electrochemical windows. Furthermore, an effect of Li salt addition on viscosity and apparent charge transfer resistance (RCT) of a Li anode and a LiCoO 2 composite cathode in ILs were also investigated. For this purpose, we selected N122.1O2+ (N,N-diethyl-N-methyl-N-(2- methoxyethyl)ammonium) as a counter cation since the cation forms ILs with various anions such as BF4-, CF3BF 3-,C2F5BF3-, C0C0- (FSA-), C1C 1- (TFSA-), TSAC-, C 2C2- (BETA ), PF6-, and FAP-. As a results, the good performance observed in FSA-ILs was attributed to the absence of significant increase of the viscosity with the addition of a Li salt and the lowest RCT on the LiCoO2.

Original languageEnglish
Title of host publicationECS Transactions - Non-Aqueous Electrolytes for Lithium Batteries - 214th ECS Meeting
Pages59-66
Number of pages8
Edition35
DOIs
Publication statusPublished - 2009
Externally publishedYes
EventNon-Aqueous Electrolytes for Lithium Batteries - 214th ECS Meeting - Honolulu, HI, United States
Duration: Oct 12 2008Oct 17 2008

Publication series

NameECS Transactions
Number35
Volume16
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceNon-Aqueous Electrolytes for Lithium Batteries - 214th ECS Meeting
Country/TerritoryUnited States
CityHonolulu, HI
Period10/12/0810/17/08

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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