A novel n-type hybrid composite with a large Seebeck coefficient around room temperature based on poly(3,4-ethylene dioxydiophene) and titanium disulfide


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Ahmed N. S. , Karaman F.

Journal Of The Indian Chemical Society, vol.96, no.9, pp.1199-1204, 2019 (Journal Indexed in SCI Expanded)

  • Publication Type: Article / Article
  • Volume: 96 Issue: 9
  • Publication Date: 2019
  • Title of Journal : Journal Of The Indian Chemical Society
  • Page Numbers: pp.1199-1204

Abstract

A great effort is given to make flexible thermoelectric modules to convert thermal energy to electric energy, recently. A thermoelectric

module is fabricated by connecting several p- and n-type thermoelectric material couples. Although air stable ptype

polymeric thermoelectric materials made progress in performance and stability, n-type polymeric materials are still confronted

with significant challenges for achieving efficient and stable thermoelectric material.

An efficient n-type thermoelectric material was simply produced in this study by mixing the TiS2 with PEDOT:PSSA dispersion

and then ultra-sonicating the mixture in an ice bath. The highest power factor of 1516 = microW m–1 K–2 was achieved

and the highest figure of merit, ZT of 1.14 was estimated at 300 K by assuming 0.4 W m–1 K–1 of the thermal conductivity of

the composite containing 20% of TiS2. To the best of our knowledge, this power factor is the highest among the n-type polymeric

thermoelectric materials reported in the literature.