Poly(3,4-ethylenedioxythiophene)/graphene/carbon nanotube ternary composites with improved thermoelectric performance

• Preparation and thermoelectric performance of ternary composites of PEDOT/graphene/CNT were reported.
• The ternary composites were prepared by in situ polymerization and subsequent physical mixing.
• The ternary composites revealed greatly enhanced thermoelectric performance.
• Post-treatment by H2SO4 led to an improvement of thermoelectric performance.

Polymer based ternary thermoelectric composites have been studied. Here, poly(3,4-ethylenedioxythiophene)/graphene/carbon nanotube (PEDOT/graphene/CNT) ternary composites are prepared by in situ polymerization and subsequent physical mixing. Then, the morphology is directly observed by scanning electron microscopy. Finally, the thermoelectric performances are measured and discussed, where the effect of acid-treatment is investigated and comparison with those of the neat PEDOT and the binary PEDOT/graphene composite is conducted.

Figure optionsDownload as PowerPoint slide