Effect of organic additives on the cycling performances of lithium metal polymer cells

Choi, Ji-Ae, Eo, Seung-Min, MacFarlane, Douglas R., Forsyth, Maria, Cha, Eunhee and Kim, Dong-Won 2008, Effect of organic additives on the cycling performances of lithium metal polymer cells, Journal of power sources, vol. 178, no. 2, pp. 832-836, doi: 10.1016/j.jpowsour.2007.08.015.

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Title Effect of organic additives on the cycling performances of lithium metal polymer cells
Author(s) Choi, Ji-Ae
Eo, Seung-Min
MacFarlane, Douglas R.
Forsyth, MariaORCID iD for Forsyth, Maria orcid.org/0000-0002-4273-8105
Cha, Eunhee
Kim, Dong-Won
Journal name Journal of power sources
Volume number 178
Issue number 2
Start page 832
End page 836
Total pages 5
Publisher Elsevier SA
Place of publication Switzerland
Publication date 2008-04-01
ISSN 0378-7753
Keyword(s) Conductive polymer
Cycling performance
Electrochemical oxidation
Gel polymer electrolyte
Lithium metal polymer cell
Organic additive
Summary Gel polymer electrolytes were prepared by immersing a porous poly(vinylidene fluoride-co-hexafluoropropylene) membrane in an electrolyte solution containing small amounts of organic additive. Three kinds of organic compounds, thiophene, 3,4-ethylenedioxythiophene and biphenyl, were used as a polymerizable monomeric additive. The organic additives were found to be electrochemically oxidized to form conductive polymer films on the electrode at high potential. By using the gel polymer electrolytes containing different organic additive, lithium metal polymer cells, composed of lithium anode and LiCoO2 cathode, were assembled and their cycling performance evaluated. Adding small amounts of a suitable polymerizable additive to the gel polymer electrolyte was found to reduce the interfacial resistance in the cell during cycling, and it thus exhibited less capacity fade and better high rate performance. Differential scanning calorimetric studies showed that the thermal stability of the fully charged LiCoO2 cathode was improved in the cell containing an organic additive.
Language eng
DOI 10.1016/j.jpowsour.2007.08.015
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 ©2007, Elsevier B.V. All rights reserved.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30030092

Document type: Journal Article
Collections: Institute for Technology Research and Innovation
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