Facile coating of poly(3,4-ethylenedioxythiophene) on manganese dioxide by galvanic displacement reaction and its electrochemical properties for electrochemical capacitors

Kwang Heon Kim; Ji Young Kim; Kwang Bum Kim

doi:10.5012/bkcs.2012.33.8.2529

Facile coating of poly(3,4-ethylenedioxythiophene) on manganese dioxide by galvanic displacement reaction and its electrochemical properties for electrochemical capacitors

Kwang Heon Kim, Ji Young Kim, Kwang Bum Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Poly(3,4-ethylenedioxythiophene) coated Manganese Dioxide (PEDOT/MnO ₂) composite electrode was fabricated by simply immersing the MnO ₂ electrode in an acidic aqueous solution containing 3,4- ethylenedioxythiophene (EDOT) monomers. Analysis of open-circuit potential of the MnO ₂ electrode in the solution indicates the reduction of outer surface of MnO ₂ to dissolved Mn ²⁺ ions and simultaneously oxidation of EDOT monomer to PEDOT on the MnO ₂ surface to form a PEDOT shell via a galvanic displacement reaction. Analysis of cyclic voltammograms and specific capacitance of the PEDOT/MnO ₂, conductive carbon added MnO ₂ and conductive carbon added PEDOT/MnO ₂ electrodes suggests that the conductive carbon acted mainly to provide a continuous conducting path in the electrode to improve the rate capability and the PEDOT layer on MnO ₂ acts to increase the active reaction site of MnO ₂.

Original language	English
Pages (from-to)	2529-2534
Number of pages	6
Journal	Bulletin of the Korean Chemical Society
Volume	33
Issue number	8
DOIs	https://doi.org/10.5012/bkcs.2012.33.8.2529
Publication status	Published - 2012 Aug 20

All Science Journal Classification (ASJC) codes

Chemistry(all)

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@article{7e112863257e4a0892b038ab03dc619f,

title = "Facile coating of poly(3,4-ethylenedioxythiophene) on manganese dioxide by galvanic displacement reaction and its electrochemical properties for electrochemical capacitors",

abstract = "Poly(3,4-ethylenedioxythiophene) coated Manganese Dioxide (PEDOT/MnO 2) composite electrode was fabricated by simply immersing the MnO 2 electrode in an acidic aqueous solution containing 3,4- ethylenedioxythiophene (EDOT) monomers. Analysis of open-circuit potential of the MnO 2 electrode in the solution indicates the reduction of outer surface of MnO 2 to dissolved Mn 2+ ions and simultaneously oxidation of EDOT monomer to PEDOT on the MnO 2 surface to form a PEDOT shell via a galvanic displacement reaction. Analysis of cyclic voltammograms and specific capacitance of the PEDOT/MnO 2, conductive carbon added MnO 2 and conductive carbon added PEDOT/MnO 2 electrodes suggests that the conductive carbon acted mainly to provide a continuous conducting path in the electrode to improve the rate capability and the PEDOT layer on MnO 2 acts to increase the active reaction site of MnO 2.",

author = "Kim, {Kwang Heon} and Kim, {Ji Young} and Kim, {Kwang Bum}",

year = "2012",

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doi = "10.5012/bkcs.2012.33.8.2529",

language = "English",

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journal = "Bulletin of the Korean Chemical Society",

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}

Facile coating of poly(3,4-ethylenedioxythiophene) on manganese dioxide by galvanic displacement reaction and its electrochemical properties for electrochemical capacitors. / Kim, Kwang Heon; Kim, Ji Young; Kim, Kwang Bum.

In: Bulletin of the Korean Chemical Society, Vol. 33, No. 8, 20.08.2012, p. 2529-2534.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Facile coating of poly(3,4-ethylenedioxythiophene) on manganese dioxide by galvanic displacement reaction and its electrochemical properties for electrochemical capacitors

AU - Kim, Kwang Heon

AU - Kim, Ji Young

AU - Kim, Kwang Bum

PY - 2012/8/20

Y1 - 2012/8/20

N2 - Poly(3,4-ethylenedioxythiophene) coated Manganese Dioxide (PEDOT/MnO 2) composite electrode was fabricated by simply immersing the MnO 2 electrode in an acidic aqueous solution containing 3,4- ethylenedioxythiophene (EDOT) monomers. Analysis of open-circuit potential of the MnO 2 electrode in the solution indicates the reduction of outer surface of MnO 2 to dissolved Mn 2+ ions and simultaneously oxidation of EDOT monomer to PEDOT on the MnO 2 surface to form a PEDOT shell via a galvanic displacement reaction. Analysis of cyclic voltammograms and specific capacitance of the PEDOT/MnO 2, conductive carbon added MnO 2 and conductive carbon added PEDOT/MnO 2 electrodes suggests that the conductive carbon acted mainly to provide a continuous conducting path in the electrode to improve the rate capability and the PEDOT layer on MnO 2 acts to increase the active reaction site of MnO 2.

AB - Poly(3,4-ethylenedioxythiophene) coated Manganese Dioxide (PEDOT/MnO 2) composite electrode was fabricated by simply immersing the MnO 2 electrode in an acidic aqueous solution containing 3,4- ethylenedioxythiophene (EDOT) monomers. Analysis of open-circuit potential of the MnO 2 electrode in the solution indicates the reduction of outer surface of MnO 2 to dissolved Mn 2+ ions and simultaneously oxidation of EDOT monomer to PEDOT on the MnO 2 surface to form a PEDOT shell via a galvanic displacement reaction. Analysis of cyclic voltammograms and specific capacitance of the PEDOT/MnO 2, conductive carbon added MnO 2 and conductive carbon added PEDOT/MnO 2 electrodes suggests that the conductive carbon acted mainly to provide a continuous conducting path in the electrode to improve the rate capability and the PEDOT layer on MnO 2 acts to increase the active reaction site of MnO 2.

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