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Preparation of Supercapacitors on Flexible Substrates with Electrodeposited PEDOT/Graphene Composites

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Preparation of Supercapacitors on Flexible Substrates with Electrodeposited PEDOT/Graphene Composites. / Lehtimäki, Suvi; Suominen, Milla; Damlin, Pia; Tuukkanen, Sampo; Kvarnström, Carita; Lupo, Donald.

In: ACS Applied Materials and Interfaces, Vol. 7, No. 40, 14.10.2015, p. 22137-22147.

Research output: Contribution to journalArticleScientificpeer-review

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Lehtimäki, S, Suominen, M, Damlin, P, Tuukkanen, S, Kvarnström, C & Lupo, D 2015, 'Preparation of Supercapacitors on Flexible Substrates with Electrodeposited PEDOT/Graphene Composites', ACS Applied Materials and Interfaces, vol. 7, no. 40, pp. 22137-22147. https://doi.org/10.1021/acsami.5b05937

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Lehtimäki, Suvi ; Suominen, Milla ; Damlin, Pia ; Tuukkanen, Sampo ; Kvarnström, Carita ; Lupo, Donald. / Preparation of Supercapacitors on Flexible Substrates with Electrodeposited PEDOT/Graphene Composites. In: ACS Applied Materials and Interfaces. 2015 ; Vol. 7, No. 40. pp. 22137-22147.

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@article{155aac3f28014300823f2d29a632fd02,
title = "Preparation of Supercapacitors on Flexible Substrates with Electrodeposited PEDOT/Graphene Composites",
abstract = "Composite films consisting of poly(3,4-ethylenedioxythiophene) (PEDOT) and graphene oxide (GO) were electrochemically polymerized by electrooxidation of EDOT in ionic liquid (BMIMBF4) onto flexible electrode substrates. Two polymerization approaches were compared, and the cyclic voltammetry (CV) method was found to be superior to potentiostatic polymerization for the growth of PEDOT/GO films. After deposition, incorporated GO was reduced to rGO by a rapid electrochemical method of repetitive cathodic potential cycling, without using any reducing reagents. The films were characterized in 3-electrode configuration in BMIMBF4. Symmetric supercapacitors with aqueous electrolyte were assembled from the composite films and characterized through cyclic voltammetry and galvanostatic discharge tests. It was shown that PEDOT/rGO composites have better capacitive properties than pure PEDOT or the unreduced composite film. The cycling stability of the supercapacitors was also tested, and the results indicate that the specific capacitance still retains well over 90{\%} of the initial value after 2000 consecutive charging/discharging cycles. The supercapacitors were demonstrated as energy storages in a room light energy harvester with a printed organic solar cell and printed electrochromic display. The results are promising for the development of energy-autonomous, low-power, and disposable electronics.",
keywords = "composite, electrodeposition, energy harvester, flexible substrate, graphene, PEDOT, supercapacitor",
author = "Suvi Lehtim{\"a}ki and Milla Suominen and Pia Damlin and Sampo Tuukkanen and Carita Kvarnstr{\"o}m and Donald Lupo",
note = "ORG=elt,0.67 ORG=ase,0.33",
year = "2015",
month = "10",
day = "14",
doi = "10.1021/acsami.5b05937",
language = "English",
volume = "7",
pages = "22137--22147",
journal = "ACS Applied Materials & Interfaces",
issn = "1944-8244",
publisher = "American Chemical Society ACS",
number = "40",

}

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TY - JOUR

T1 - Preparation of Supercapacitors on Flexible Substrates with Electrodeposited PEDOT/Graphene Composites

AU - Lehtimäki, Suvi

AU - Suominen, Milla

AU - Damlin, Pia

AU - Tuukkanen, Sampo

AU - Kvarnström, Carita

AU - Lupo, Donald

N1 - ORG=elt,0.67 ORG=ase,0.33

PY - 2015/10/14

Y1 - 2015/10/14

N2 - Composite films consisting of poly(3,4-ethylenedioxythiophene) (PEDOT) and graphene oxide (GO) were electrochemically polymerized by electrooxidation of EDOT in ionic liquid (BMIMBF4) onto flexible electrode substrates. Two polymerization approaches were compared, and the cyclic voltammetry (CV) method was found to be superior to potentiostatic polymerization for the growth of PEDOT/GO films. After deposition, incorporated GO was reduced to rGO by a rapid electrochemical method of repetitive cathodic potential cycling, without using any reducing reagents. The films were characterized in 3-electrode configuration in BMIMBF4. Symmetric supercapacitors with aqueous electrolyte were assembled from the composite films and characterized through cyclic voltammetry and galvanostatic discharge tests. It was shown that PEDOT/rGO composites have better capacitive properties than pure PEDOT or the unreduced composite film. The cycling stability of the supercapacitors was also tested, and the results indicate that the specific capacitance still retains well over 90% of the initial value after 2000 consecutive charging/discharging cycles. The supercapacitors were demonstrated as energy storages in a room light energy harvester with a printed organic solar cell and printed electrochromic display. The results are promising for the development of energy-autonomous, low-power, and disposable electronics.

AB - Composite films consisting of poly(3,4-ethylenedioxythiophene) (PEDOT) and graphene oxide (GO) were electrochemically polymerized by electrooxidation of EDOT in ionic liquid (BMIMBF4) onto flexible electrode substrates. Two polymerization approaches were compared, and the cyclic voltammetry (CV) method was found to be superior to potentiostatic polymerization for the growth of PEDOT/GO films. After deposition, incorporated GO was reduced to rGO by a rapid electrochemical method of repetitive cathodic potential cycling, without using any reducing reagents. The films were characterized in 3-electrode configuration in BMIMBF4. Symmetric supercapacitors with aqueous electrolyte were assembled from the composite films and characterized through cyclic voltammetry and galvanostatic discharge tests. It was shown that PEDOT/rGO composites have better capacitive properties than pure PEDOT or the unreduced composite film. The cycling stability of the supercapacitors was also tested, and the results indicate that the specific capacitance still retains well over 90% of the initial value after 2000 consecutive charging/discharging cycles. The supercapacitors were demonstrated as energy storages in a room light energy harvester with a printed organic solar cell and printed electrochromic display. The results are promising for the development of energy-autonomous, low-power, and disposable electronics.

KW - composite

KW - electrodeposition

KW - energy harvester

KW - flexible substrate

KW - graphene

KW - PEDOT

KW - supercapacitor

UR - http://www.scopus.com/inward/record.url?scp=84944339285&partnerID=8YFLogxK

U2 - 10.1021/acsami.5b05937

DO - 10.1021/acsami.5b05937

M3 - Article

VL - 7

SP - 22137

EP - 22147

JO - ACS Applied Materials & Interfaces

JF - ACS Applied Materials & Interfaces

SN - 1944-8244

IS - 40

ER -