Supercapacitor studies of electrochemically deposited PEDOT on stainless steel substrate
Identifieur interne : 000756 ( Main/Exploration ); précédent : 000755; suivant : 000757Supercapacitor studies of electrochemically deposited PEDOT on stainless steel substrate
Auteurs : S. Patra [Inde] ; N. Munichandraiah [Inde]Source :
- Journal of Applied Polymer Science [ 0021-8995 ] ; 2007-10-15.
English descriptors
Abstract
There has been increasing interest on various properties and applications of electronically conducting polymers. Polyethylenedioxythiophene (PEDOT) is an interesting polymer of this type as it exhibits very high ionic conductivity. In the present study, PEDOT has been electrochemically deposited on stainless steel (SS) substrate for supercapacitor studies. PEDOT/SS electrodes prepared in 0.1M H2SO4 in presence of a surfactant, sodium dodecylsulphate (SDS), have been found to yield higher specific capacitance (SC) than the electrodes prepared from neutral aqueous electrolyte. The effects of concentration of H2SO4, concentration of SDS, potential of deposition, and nature of supporting electrolytes used for capacitor studies on SC of the PEDOT/SS electrodes have been studied. SC values as high as 250 F/g in 1M oxalic acid have been obtained during the initial stages of cycling. However, there is a rapid decrease in SC on repeated charge‐discharge cycling. Spectroscopic data reflect structural changes in PEDOT on extended cycling. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
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DOI: 10.1002/app.26675
Affiliations:
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Patra</name><affiliation wicri:level="1"><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012</wicri:regionArea><wicri:noRegion>Bangalore 560012</wicri:noRegion></affiliation></author><author><name sortKey="Munichandraiah, N" sort="Munichandraiah, N" uniqKey="Munichandraiah N" first="N." last="Munichandraiah">N. Munichandraiah</name><affiliation wicri:level="1"><country xml:lang="fr">Inde</country><wicri:regionArea>Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012</wicri:regionArea><wicri:noRegion>Bangalore 560012</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Applied Polymer Science</title><title level="j" type="abbrev">J. Appl. Polym. Sci.</title><idno type="ISSN">0021-8995</idno><idno type="eISSN">1097-4628</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2007-10-15">2007-10-15</date><biblScope unit="volume">106</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="1160">1160</biblScope><biblScope unit="page" to="1171">1171</biblScope></imprint><idno type="ISSN">0021-8995</idno></series><idno type="istex">97830BE8210E5E7CCA694719D7F3D649EB4954F9</idno><idno type="DOI">10.1002/app.26675</idno><idno type="ArticleID">APP26675</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0021-8995</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>AC impedance</term><term>PEDOT</term><term>charge‐discharge cycling</term><term>conducting polymers</term><term>supercapacitor</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">There has been increasing interest on various properties and applications of electronically conducting polymers. Polyethylenedioxythiophene (PEDOT) is an interesting polymer of this type as it exhibits very high ionic conductivity. In the present study, PEDOT has been electrochemically deposited on stainless steel (SS) substrate for supercapacitor studies. PEDOT/SS electrodes prepared in 0.1M H2SO4 in presence of a surfactant, sodium dodecylsulphate (SDS), have been found to yield higher specific capacitance (SC) than the electrodes prepared from neutral aqueous electrolyte. The effects of concentration of H2SO4, concentration of SDS, potential of deposition, and nature of supporting electrolytes used for capacitor studies on SC of the PEDOT/SS electrodes have been studied. SC values as high as 250 F/g in 1M oxalic acid have been obtained during the initial stages of cycling. However, there is a rapid decrease in SC on repeated charge‐discharge cycling. Spectroscopic data reflect structural changes in PEDOT on extended cycling. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007</div></front></TEI><affiliations><list><country><li>Inde</li></country></list><tree><country name="Inde"><noRegion><name sortKey="Patra, S" sort="Patra, S" uniqKey="Patra S" first="S." last="Patra">S. Patra</name></noRegion><name sortKey="Munichandraiah, N" sort="Munichandraiah, N" uniqKey="Munichandraiah N" first="N." last="Munichandraiah">N. Munichandraiah</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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