Open AccessThermoelectric and mechanical performances of ionic liquid-modulated PEDOT:PSS/SWCNT composites at high temperatures
Author(s) -
Zachary Feuer,
Jacob Taylor,
William C. Huang
Publication year - 2022
Publication title -
soft science
Language(s) - English
Resource type - Journals
ISSN - 2769-5441
DOI - 10.20517/ss.2021.17
Subject(s) - materials science , pedot:pss , composite material , carbon nanotube , ionic liquid , thermoelectric effect , composite number , polymer , conductive polymer , biochemistry , chemistry , physics , thermodynamics , catalysis
Significant progress has been achieved for flexible polymer thermoelectric (TE) composites in the recent decade due to their potential application in wearable devices and sensors. In sharp contrast with the booming TE studies at room temperature, the TE performances of polymer TE composites received relatively less attention despite the significance for the application of TE composites in the high temperature environments. The TE and mechanical performances of flexible poly (3,4 ethylenedioxythiophene):poly(styrene sulfonate)/single-walled carbon nanotube (PEDOT:PSS/SWCNT) composite films with ionic liquid (IL) (refer to as “PEDOT:PSS/SWCNT-IL”) at high temperatures are studied in the present work. The resultant composite film shows the increasing TE performances with increasing temperatures and SWCNT contents. The maximum value of the power factor reaches 301.35 W m-1 K-2 at 470 K for the PEDOT:PSS/SWCNT-IL composite. Besides, the addition of IL can improve the elongation at break of composites compared to the IL-free composites. This work promotes the advance of flexible polymer TE composites and widens the potential applications at different temperature ranges.