Fabrication of High-Performance Flexible Supercapacitor Electrodes with Poly(3,4-ethylenedioxythiophene) (PEDOT) Grown on Carbon-Deposited Polyurethane Sponge

Linyue Tong, Laura A. Sonnenberg, Wei Wu, Steven M. Boyer, Maggie T. Fox, Boxiao Li, William E. Bernier and Wayne E. Jones
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Linyue Tong: Chemistry Department, Harpur College of Arts and Sciences, Binghamton University State University of New York, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
Laura A. Sonnenberg: Chemistry Department, Harpur College of Arts and Sciences, Binghamton University State University of New York, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
Wei Wu: Chemistry Department, Harpur College of Arts and Sciences, Binghamton University State University of New York, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
Steven M. Boyer: Chemistry Department, Harpur College of Arts and Sciences, Binghamton University State University of New York, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
Maggie T. Fox: Chemistry Department, Harpur College of Arts and Sciences, Binghamton University State University of New York, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
Boxiao Li: Chemistry Department, Harpur College of Arts and Sciences, Binghamton University State University of New York, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
William E. Bernier: Chemistry Department, Harpur College of Arts and Sciences, Binghamton University State University of New York, 4400 Vestal Parkway East, Binghamton, NY 13902, USA
Wayne E. Jones: Chemistry Department, Harpur College of Arts and Sciences, Binghamton University State University of New York, 4400 Vestal Parkway East, Binghamton, NY 13902, USA

Energies, 2021, vol. 14, issue 21, 1-17

Abstract: Composite porous supercapacitor electrodes were prepared by growing poly(3,4-ethylenedioxythiophene) (PEDOT) on graphite nanoplatelet- or graphene nanoplatelet-deposited open-cell polyurethane (PU) sponges via a vapor phase polymerization (VPP) method. The resulting composite supercapacitor electrodes exhibited great capacitive performance, with PEDOT acting as both the conductive binder and the active material. The chemical composition was characterized by Raman spectroscopy and the surface morphology was characterized by scanning electron microscopy (SEM). Cyclic voltammetry ( CV ), charge-discharge ( CD ) tests and electrochemical impedance spectroscopy were utilized to study the electrical performance of the composite electrodes produced in symmetrically configured supercapacitor cells. The carbon material deposited on PU substrates and the polymerization temperature of PEDOT affected significantly the PEDOT morphology and the electrical properties of the resulting composite sponges. The highest areal specific capacitance 798.2 mF cm −2 was obtained with the composite sponge fabricated by VPP of PEDOT at 110 °C with graphene nanoplatelet-deposited PU sponge substrate. The capacitance retention of this composite electrode was 101.0% after 10,000 charging–discharging cycles. The high flexibility, high areal specific capacitance, excellent long-term cycling stability and low cost make these composite sponges promising electrode materials for supercapacitors.

Keywords: poly(3,4-ethylenedioxythiophene); carbon material deposited sponge; vapor-phase polymerization; supercapacitor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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