CNT-PEDOT Hybrid Foam for Shape Adaptable Thermoelectric Modules
발표자
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초록
내용
Advances in thermoelectric (TE) materials for an efficient energy conversion have recently elevated with development of wearable electronics. However, despite recent dramatic progress in both inorganic and organic thermoelectric materials, absence of TE materials to perfectly adapt heat sources slows down a use in a wide range of TE application with complicated curvatures. In this work, shape-adaptable carbon nanotube (CNT) foams combined with two different polymers, poly(3,4-ethylenedioxythiophene) (PEDOT) and polystyrene (PS), are prepared to enhance the TE property through rapid solvent evaporation process. The CNT-PEDOT composite foams exhibits significantly lowered thermal conductivity of 0.51 W m−1 K−1 and increased Seebeck coefficient of 45.9 µV K−1 compared to those of the CNT-FeCl3 and CNT-PS foams. The maximum dimensionless figure-of-merit (zT) of CNT-PEDOT composite foam is 6 and 24 times higher than those of CNT-FeCl3 and CNT-PS foams, respectively.