Abstract:

In order to obtain a novel flexible and wearable thermoelectric materials, (Poly(3,4-ethylenedioxythiophene) and poly(4-styrenesulfonate)(PEDOT/PSS) were used to evenly disperse carbon nanotubes (CNTs) onto fabrics, CNTs/PEDOT/PSS thermoelectric composite textile materials were prepared by dipping-drying method. The surface morphology and crystallization of the thermoelectric composite textile materials were characterized by field-emission scanning electron microscope and X ray diffraction. The Seebeck coefficient, electrical conductivity and thermal conductivity of CNTs composites with different content were measured. The thermoelectric properties were studied by calculating the thermoelectrc figure of merit (ZT) value, and the wearability such as moisture permeability and wrinkle recovery were studied. The results show that with the increase of CNTs content, the Seebeck coefficient and the electrical conductivity are increased, and the thermal conductivity remained at a lower level, the ZT value is increased, the thermoelectric properties are gradually enhanced, the moisture permeability is decreased, but the wrinkle recovery is better. When the CNTs content is 0.4% , the ZT value reached 2.99 × 10-9.

Key words: thermoelectric composite textile material, poly (3,4-ethylenedioxythiophene), poly (4-styrenesulfonate) , carbon nanotube, thermoelectric property, wearability