POLYMERS AND POLYMER MATRIX COMPOSITES |
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Preparation of PEDOT/PEDOT∶PSS-based Flexible Nanofiber Film and Its Thermoelectric Properties by Electrochemical Deposition |
JIN Shengnan, SUN Tingting, WANG Minghui, JIANG Wan
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State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China |
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Abstract The preparation of flexible thermoelectric films by electrospinning is a very feasible method. The nanofibers are arranged randomly under electric field and form a porous structure, which not only increase the deformability, flexibility and ductility of nanofiber film, but also increase the content of non-flowing air with low thermal conductivity in nanofibers and this is conducive to reducing the thermal conductivity of the film. Howe-ver, there are few studies currently on the application of electrospinning in the field of flexible thermoelectric materials. In this paper, poly(3,4-ethylenedioxythiophene)∶poly(styrenesulfonate)-based (PEDOT∶PSS-based) nanofiber film with good self-supporting and flexibility was prepared by electrospinning. Then through electrochemical polymerization, PEDOT/PEDOT: PSS based thermoelectric nanofiber film was obtained. It was found that the polymer potential and monomer concentration had great influences on the conductivity of thermoelectric nanofiber film. At the polymerization potential of 1.5 V and monomer concentration of 0.03 mol/L, the conductivity and Seebeck coefficient were 9.582 S·cm-1 and 26.7 μV·K-1 respectively. The optimal PF value was 0.68 μW·m-1·K-2.
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Published: 25 April 2020
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Fund:This work was financially supported by Shanghai Science and Technology Commission (18JC1411200). |
About author:: Shengnan Jin, master of Science in Materials Physics and Chemistry, Donghua University. Minghui Wang, technician, Donghua University. |
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