Enhanced thermoelectric properties of highly conductive poly (3,4-ethylenedioxy thiophene)/exfoliated graphitic carbon nitride composites


Uğraşkan V. , Karaman F.

Synthetic Metals, no.287, pp.117070, 2022 (Journal Indexed in SCI)

  • Publication Type: Article / Article
  • Publication Date: 2022
  • Doi Number: 10.1016/j.synthmet.2022.117070
  • Journal Name: Synthetic Metals
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.117070
  • Yıldız Technical University Affiliated: Yes

Abstract

In this study, the thermoelectric properties of as-synthesized and –exfoliated graphitic carbon nitride (g-C3N4) filled poly (3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT: PSS) were investigated. Firstly, g-C3N4 was synthesized by heating of guanidine-HCl at 550 °C and exfoliated using an ultrasonic homogenizer. Then, PEDOT:PSS was synthesized by oxidative chemical polymerization. Finally, the composites containing different weight ratios of g-C3N4 were prepared. The conductivity of pristine PEDOT:PSS increased from 11.1 Scm−1 to 722.15 Scm−1 for the composite containing 25% exfoliated g-C3N4, whereas the power factor of PEDOT:PSS increased from 0.19 μWm−1K−2 to 419.7 μWm−1K−2 for the composite containing 15% exfoliated g-C3N4. This study suggests that exfoliated g-C3N4 is a promising material to increase the electrical conductivity and power factor of PEDOT:PSS.

In this study, the thermoelectric properties of as-synthesized and –exfoliated graphitic carbon nitride (g-C3N4) filled poly (3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT: PSS) were investigated. Firstly, g-C3N4 was synthesized by heating of guanidine-HCl at 550 °C and exfoliated using an ultrasonic homogenizer. Then, PEDOT:PSS was synthesized by oxidative chemical polymerization. Finally, the composites containing different weight ratios of g-C3N4 were prepared. The conductivity of pristine PEDOT:PSS increased from 11.1 Scm−1 to 722.15 Scm−1 for the composite containing 25% exfoliated g-C3N4, whereas the power factor of PEDOT:PSS increased from 0.19 μWm−1K−2 to 419.7 μWm−1K−2 for the composite containing 15% exfoliated g-C3N4. This study suggests that exfoliated g-C3N4 is a promising material to increase the electrical conductivity and power factor of PEDOT:PSS.