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Polyterthiophene/CNT composite as a cathode material for lithium batteries employing an ionic liquid electrolyte

Sivakkumar, S. R., Howlett, Patrick C., Winther-Jensen, Bjorn, Forsyth, Maria and MacFarlane, Douglas R. 2009, Polyterthiophene/CNT composite as a cathode material for lithium batteries employing an ionic liquid electrolyte, Electrochimica acta, vol. 54, no. 27, pp. 6844-6849.

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Title Polyterthiophene/CNT composite as a cathode material for lithium batteries employing an ionic liquid electrolyte
Author(s) Sivakkumar, S. R.
Howlett, Patrick C.
Winther-Jensen, Bjorn
Forsyth, Maria
MacFarlane, Douglas R.
Journal name Electrochimica acta
Volume number 54
Issue number 27
Start page 6844
End page 6849
Publisher Elsevier
Place of publication New York, N.Y.
Publication date 2009-11-30
ISSN 0013-4686
1873-3859
Keyword(s) conducting polymer cathode
polythiophene
polyterthiophene
ionic liquid electrolyte
lithium battery
Summary A polyterthiophene (PTTh)/multi-walled carbon nanotube (CNT) composite was synthesised by in situ chemical polymerisation and used as an active cathode material in lithium cells assembled with an ionic liquid (IL) or conventional liquid electrolyte, LiBF4/EC–DMC–DEC. The IL electrolyte consisted of 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4) containing LiBF4 and a small amount of vinylene carbonate (VC). The lithium cells were characterised by cyclic voltammetry (CV) and galvanostatic charge/discharge cycling. The specific capacity of the cells with IL and conventional liquid electrolytes after the 1st cycle was 50 and 47 mAh g−1 (based on PTTh weight), respectively at the C/5 rate. The capacity retention after the 100th cycle was 78% and 53%, respectively. The lithium cell assembled with a PTTh/CNT composite cathode and a non-flammable IL electrolyte exhibited a mean discharge voltage of 3.8 V vs Li+/Li and is a promising candidate for high-voltage power sources with enhanced safety.
Language eng
Field of Research 039999 Chemical Sciences not elsewhere classified
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2009, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30040673

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