BROWSE

Related Researcher

Author's Photo

Choi, Nam-Soon
Energy Materials Lab
Research Interests
  • Rechargeable lithium battery, electrolytes for next generation Mg and Na battery

ITEM VIEW & DOWNLOAD

Improving the electrochemical properties of graphite/LiCoO2 cells in ionic liquid-containing electrolytes

Cited 22 times inthomson ciCited 22 times inthomson ci
Title
Improving the electrochemical properties of graphite/LiCoO2 cells in ionic liquid-containing electrolytes
Author
Choi, Nam-SoonLee, YongbeomKim, Sung-SooShin, Soon-CheolKang, Yong-Mook
Keywords
Fluoroethylene carbonate; Graphite; Ionic liquid; Lithium cobalt oxide; Lithium-ion battery
Issue Date
2010-04
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.195, no.8, pp.2368 - 2371
Abstract
The electrochemical performance of graphite/lithium cobalt oxide (LiCoO2) cells in N-methoxymethyl-N,N-dimethylethylammonium bis(trifluoromethane-sulfonyl) imide (MMDMEA-TFSI)-containing electrolytes is significantly enhanced by the formation of a fluoroethylene carbonate (FEC)-derived protective film on an anode during the first cycle. The electrochemical intercalation of MMDMEA cations into the graphene layer is readily visualized by ex situ transmission electron microscopy (TEM). Moreover, differences in the X-ray diffraction (XRD) patterns of graphite electrodes in cells charged with and without FEC in dimethyl carbonate (DMC)/MMDMEA-TFSI are clearly discernible. Conclusively, the presence of FEC in MMDMEA-TFSI-containing electrolytes leads to a remarkable enhancement of discharge capacity retention for graphite/LiCoO2 cells as compared with ethylene carbonate (EC) and vinylene carbonate (VC).
URI
Go to Link
DOI
10.1016/j.jpowsour.2009.10.063
ISSN
0378-7753
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
2-s2.0-74249101061.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU