Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (10): 65-70.doi: 10.13475/j.fzxb.20210803106

• Textile Engineering • Previous Articles     Next Articles

Preparation and performance of spacer fabric-based photothermal-thermoelectric composites

LI Mufang, CHEN Jiaxin, ZENG Fanjia, WANG Dong()   

  1. Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University,Wuhan, Hubei 430200, China
  • Received:2021-08-04 Revised:2022-03-18 Online:2022-10-15 Published:2022-10-28
  • Contact: WANG Dong E-mail:wangdon08@126.com

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Abstract:

In order to improve the thermoelectric performance of flexible wearable energy supply equipment, NaOH and dimethylsulfoxide (DMSO) are used together to dope poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT:PSS)to prepare NaOH/DMSO/PEDOT:PSS thermoelectric film, and the influence of NaOH and DMSO concentration on the conductivity, Seebeck coefficient and power factor of PEDOT:PSS were studied. Cotton/polyester spacer fabric was used as the substrate, and the photothermal-thermoelectric composite thermoelectric material was prepared by compounding NaOH/DMSO/PEDOT:PSS and coating ZrC/polyurethane (PU) photothermal layer, and the morphology, structure and thermoelectric properties of the composites were characterized. The results show that when 0.5% NaOH and 3.5% DMSO are added, the power factor of NaOH/DMSO/PEDOT:PSS thermoelectric film reaches the peak value of 25.6 μW/(m·K2), which is 2 327 times that of pure PEDOT:PSS film. The Seebeck coefficient of the photothermal-thermoelectric composite material is 35.5 μV/K, and the voltage generated by the thermoelectric composite material under illumination after adding the photothermal layer is 6.3 times that of the thermoelectric composite material without a photothermal layer.

Key words: photothermal material, thermoelectric material, spacer fabric, ZrC, polyurethane, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), flexible wearable energy supply equipment

CLC Number: 

  • TB34

Fig.1

Influence of NaOH concentration on Seebeck coefficient, conductivity(a) and power factor(b) of PEDOT:PSS thermoelectric film"

Fig.2

Effect of DMSO concentration on Seebeck coefficient, conductivity(a) and power factor(b) of PEDOT:PSS thermoelectric film"

Fig.3

Morphology of spacer fabric-based photothermal-thermoelectric composite. (a) Cross-sectional of composite(×33);(b) Surface of spacer fabric(×1 000); (c) Cross-sectional of ZrC/PU photothermal layer(×50)"

Fig.4

Thermoelectric properties of spacer fabric-based photothermal-thermoelectric composite materials. (a) Resistance changes with DMSO concentration; (b) Voltage changes with temperature; (c) Voltage changes with time"

Fig.5

Voltage generated by photothermal-thermoelectric composite under light and thermoelectric unit series structure. (a) Effect of optical power density on voltage generated;(b) Thermoelectric unit series structure; (c) Voltagechanges with time"

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