Improving the electrochemical properties of graphite/LiCoO2 cells in ionic liquid-containing electrolytes
Cited 22 times inCited 22 times in
- Improving the electrochemical properties of graphite/LiCoO2 cells in ionic liquid-containing electrolytes
- Choi, Nam-Soon; Lee, Yongbeom; Kim, Sung-Soo; Shin, Soon-Cheol; Kang, Yong-Mook
- Fluoroethylene carbonate; Graphite; Ionic liquid; Lithium cobalt oxide; Lithium-ion battery
- Issue Date
- ELSEVIER SCIENCE BV
- JOURNAL OF POWER SOURCES, v.195, no.8, pp.2368 - 2371
- 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).
- ; Go to Link
- Appears in Collections:
- ECHE_Journal Papers
- Files in This Item:
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.