Effects of one- and two-dimensional carbon hybridization of PEDOT:PSS on the power factor of polymer thermoelectric energy conversion devices

Dohyuk Yoo, Jeonghun Kim, Seung Hwan Lee, Wonseok Cho, Hyang Hee Choi, Felix Sunjoo Kim, Jung Hyun Kim

Research output: Contribution to journalArticle

74 Citations (Scopus)

Abstract

We investigated the thermoelectric properties of polymer composites based on a conducting polymer and carbon materials with various dimensionalities. PEDOT:PSS as a conducting polymer matrix was successfully hybridized with graphene sheets and multi-walled carbon nanotubes through in situ polymerization of 3,4-ethlyenedioxythiophene monomers in an aqueous solution in the presence of the carbon materials dispersed by using a polymeric dispersant. The hybrid structures of PEDOT:PSS, graphene, and carbon nanotubes in the composite showed an electrical conductivity, Seebeck coefficient, and power factor of 689 S cm-1, 23.2 μV K-1, and 37.08 μW mK-2, respectively, values that are much higher than those of pristine PEDOT:PSS, PEDOT:PSS/graphene, or PEDOT:PSS/carbon-nanotube composites. The thermoelectric figure of merit increased from 0.017 in the pristine PEDOT:PSS to 0.031 in the composite, corresponding to an 80% enhancement. We believe that the enhanced thermoelectric performance comes from the synergic effects of multi-component systems with excellent electrical bridging and electronic coupling between PEDOT and carbon materials. This journal is

Original languageEnglish
Pages (from-to)6526-6533
Number of pages8
JournalJournal of Materials Chemistry A
Volume3
Issue number12
DOIs
Publication statusPublished - 2015 Mar 28

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Thermoelectric energy conversion
Polymers
Carbon
Graphene
Carbon nanotubes
Carbon Nanotubes
Graphite
Composite materials
Conducting polymers
Seebeck coefficient
Polymer matrix
Monomers
Polymerization
poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Yoo, Dohyuk ; Kim, Jeonghun ; Lee, Seung Hwan ; Cho, Wonseok ; Choi, Hyang Hee ; Kim, Felix Sunjoo ; Kim, Jung Hyun. / Effects of one- and two-dimensional carbon hybridization of PEDOT:PSS on the power factor of polymer thermoelectric energy conversion devices. In: Journal of Materials Chemistry A. 2015 ; Vol. 3, No. 12. pp. 6526-6533.
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Effects of one- and two-dimensional carbon hybridization of PEDOT:PSS on the power factor of polymer thermoelectric energy conversion devices. / Yoo, Dohyuk; Kim, Jeonghun; Lee, Seung Hwan; Cho, Wonseok; Choi, Hyang Hee; Kim, Felix Sunjoo; Kim, Jung Hyun.

In: Journal of Materials Chemistry A, Vol. 3, No. 12, 28.03.2015, p. 6526-6533.

Research output: Contribution to journalArticle

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