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

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Electrochemical and thermal properties of graphite electrodes with imidazolium- and piperidinium-based ionic liquids

Cited 27 times inthomson ciCited 27 times inthomson ci
Title
Electrochemical and thermal properties of graphite electrodes with imidazolium- and piperidinium-based ionic liquids
Author
Profatilova, Irina AChoi, Nam-SoonRoh, Sae WeonKim, Sung Soo
Keywords
Differential scanning calorimetry; Graphite electrode; Ionic liquid; Lithium-ion battery; Solid electrolyte interphase layer; Thermal stability
Issue Date
2009-07
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF POWER SOURCES, v.192, no.2, pp.636 - 643
Abstract
The electrochemical and thermal properties of graphite electrodes with electrolytes containing 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMITFSI) and N-methyl,N-propylpiperidinium bis(trifluoromethanesulfonyl)imide (MPP(P)TFSI) ionic liquids are investigated. The ionic liquids undergo extensive reductive decomposition on a graphite electrode during the first charge. The effect of a fluoroethylene carbonate (FEC) additive on the reductive decomposition of the ionic liquids is examined by electrochemical, scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) analysis. Thermal reactions between a lithiated graphite electrode and an ionic liquid-containing electrolyte are investigated with differential scanning calorimetry (DSC). The introduction of an ionic liquid can effectively reduce the exothermic heat evolution from the thermal reactions between a lithiated graphite electrode and an electrolyte.
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DOI
10.1016/j.jpowsour.2009.03.041
ISSN
0378-7753
Appears in Collections:
ECHE_Journal Papers
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