Vapor-phase polymerized poly(3,4-ethylenedioxythiophene) (PEDOT)/TiO2 composite fibers as electrode materials for supercapacitors

Linyue Tong; Jian Liu; Steven M. Boyer; Laura A. Sonnenberg; Maggie T. Fox; Dongsheng Ji; Jun Feng; William E. Bernier; Wayne E. Jones

doi:10.1016/j.electacta.2016.12.004

Vapor-phase polymerized poly(3,4-ethylenedioxythiophene) (PEDOT)/TiO₂ composite fibers as electrode materials for supercapacitors

Linyue Tong, Jian Liu, Steven M. Boyer, Laura A. Sonnenberg, Maggie T. Fox, Dongsheng Ji, Jun Feng, William E. Bernier, Wayne E. Jones^*

^*Corresponding author for this work

Chemistry

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

39 Scopus citations

Abstract

Vapor-phase polymerized poly(3,4-ethylenedioxythiophene) (PEDOT)/TiO₂ composite fibers were fabricated and applied as the supercapacitor electrode materials. TiO₂ fibers were prepared as substrates for the vapor-phase polymerization process, by electrospinning and calcination in air. The symmetric supercapacitor cells assembled with the resulting composites were studied by a series of electrical measurements including cyclic voltammetry, charge-discharge characterization and electrochemical impedance spectroscopy. To further understand the capacitive behavior, the band gap energy of the composite fibers and the specific surface area of TiO₂ fibers calcined at varied temperatures were measured. The highest specific capacitance of PEDOT on TiO₂ fibers to date, 87.9 F g⁻¹, was achieved with the composite fibers prepared by vapor-phase polymerization at 50 °C on the TiO₂ fibers calcined at 550 °C. The pseudocapacitance and the reversibility of PEDOT were improved in comparison to other PEDOT/TiO₂ binary composites.

Original language	English (US)
Pages (from-to)	133-141
Number of pages	9
Journal	Electrochimica Acta
Volume	224
DOIs	https://doi.org/10.1016/j.electacta.2016.12.004
State	Published - Jan 10 2017

Funding

The work was supported by the National Science Foundation (NSF) (IIP-1318202 and REU-DMR1263004), the NY State Technology Accelerator Fund, the Army Research Office (ARO) W911NF1310235, and the Freshman Research Immersion Smart Energy Stream at Binghamton University in part by grants from the Howard Hughes Medical Institute (HHMI) through the Precollege and Undergraduate Science Education Program and the New York State Regional Economic Development Council. We thank Dr. Stanley Whittingham for the access to the VMP multichannel potentiostat and Dr. Alok Rastogi for the Solartron Impedance Analyzer.

Keywords

TiO fibers
poly(3,4-ethylenedioxythiophene)
supercapacitor
vapor-phase polymerization

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

Access to Document

10.1016/j.electacta.2016.12.004

Cite this

@article{72daf61c8b3e4df68498c20a16c9d862,

title = "Vapor-phase polymerized poly(3,4-ethylenedioxythiophene) (PEDOT)/TiO2 composite fibers as electrode materials for supercapacitors",

abstract = "Vapor-phase polymerized poly(3,4-ethylenedioxythiophene) (PEDOT)/TiO2 composite fibers were fabricated and applied as the supercapacitor electrode materials. TiO2 fibers were prepared as substrates for the vapor-phase polymerization process, by electrospinning and calcination in air. The symmetric supercapacitor cells assembled with the resulting composites were studied by a series of electrical measurements including cyclic voltammetry, charge-discharge characterization and electrochemical impedance spectroscopy. To further understand the capacitive behavior, the band gap energy of the composite fibers and the specific surface area of TiO2 fibers calcined at varied temperatures were measured. The highest specific capacitance of PEDOT on TiO2 fibers to date, 87.9 F g−1, was achieved with the composite fibers prepared by vapor-phase polymerization at 50 °C on the TiO2 fibers calcined at 550 °C. The pseudocapacitance and the reversibility of PEDOT were improved in comparison to other PEDOT/TiO2 binary composites.",

keywords = "TiO fibers, poly(3,4-ethylenedioxythiophene), supercapacitor, vapor-phase polymerization",

author = "Linyue Tong and Jian Liu and Boyer, {Steven M.} and Sonnenberg, {Laura A.} and Fox, {Maggie T.} and Dongsheng Ji and Jun Feng and Bernier, {William E.} and Jones, {Wayne E.}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

year = "2017",

month = jan,

day = "10",

doi = "10.1016/j.electacta.2016.12.004",

language = "English (US)",

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AU - Tong, Linyue

AU - Liu, Jian

AU - Boyer, Steven M.

AU - Sonnenberg, Laura A.

AU - Fox, Maggie T.

AU - Ji, Dongsheng

AU - Feng, Jun

AU - Bernier, William E.

AU - Jones, Wayne E.

PY - 2017/1/10

Y1 - 2017/1/10

N2 - Vapor-phase polymerized poly(3,4-ethylenedioxythiophene) (PEDOT)/TiO2 composite fibers were fabricated and applied as the supercapacitor electrode materials. TiO2 fibers were prepared as substrates for the vapor-phase polymerization process, by electrospinning and calcination in air. The symmetric supercapacitor cells assembled with the resulting composites were studied by a series of electrical measurements including cyclic voltammetry, charge-discharge characterization and electrochemical impedance spectroscopy. To further understand the capacitive behavior, the band gap energy of the composite fibers and the specific surface area of TiO2 fibers calcined at varied temperatures were measured. The highest specific capacitance of PEDOT on TiO2 fibers to date, 87.9 F g−1, was achieved with the composite fibers prepared by vapor-phase polymerization at 50 °C on the TiO2 fibers calcined at 550 °C. The pseudocapacitance and the reversibility of PEDOT were improved in comparison to other PEDOT/TiO2 binary composites.

AB - Vapor-phase polymerized poly(3,4-ethylenedioxythiophene) (PEDOT)/TiO2 composite fibers were fabricated and applied as the supercapacitor electrode materials. TiO2 fibers were prepared as substrates for the vapor-phase polymerization process, by electrospinning and calcination in air. The symmetric supercapacitor cells assembled with the resulting composites were studied by a series of electrical measurements including cyclic voltammetry, charge-discharge characterization and electrochemical impedance spectroscopy. To further understand the capacitive behavior, the band gap energy of the composite fibers and the specific surface area of TiO2 fibers calcined at varied temperatures were measured. The highest specific capacitance of PEDOT on TiO2 fibers to date, 87.9 F g−1, was achieved with the composite fibers prepared by vapor-phase polymerization at 50 °C on the TiO2 fibers calcined at 550 °C. The pseudocapacitance and the reversibility of PEDOT were improved in comparison to other PEDOT/TiO2 binary composites.

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