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Free-standing thermoelectric nanocomposite based on PEDOT:PSS; Cu12+xSb4S13; and MWCNTs
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DOI：10.1039/D5TC04463D.png)
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Abstract
En 中文
Conductive polymers are promising for thermoelectric (TE) applications due to their light weight; solution processability; and flexibility; yet their performance still lags behind that of inorganic semiconductors. Here; we report for the first time the fabrication of free-standing; flexible PEDOT:PSS–tetrahedrite (TH) nanocomposite films; further enhanced by multiwalled carbon nanotubes (MWCNTs). The tetrahedrite nanopowders were synthesized via a solvothermal method using 1-(2-aminoethyl)piperazine as the solvent; developed in our laboratory; offering an environmentally benign alternative to toxic or scarce TE fillers. The composite films were prepared by a simple drop-casting method and comprehensively characterized using XRD; FTIR; XPS; SEM; and TEM; while scanning thermoelectric microscopy (SThM) enabled spatially resolved Seebeck coefficient mapping. The composite (20% nanoTH; 5% MWCNT) achieved a power factor of ∼49.5 µW m−1 K−2 at room temperature; representing more than a twofold improvement over optimized pristine PEDOT:PSS. Finally; a prototype thermoelectric generator validated the practical applicability of the best obtained material.
Keywords:
PEDOT:PSS
tetrahedrite
MWCNTs
thermoelectric nanocomposite
power factor
Journal
J
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Papers:
941
Citations:
1