A Self-Powered Flexible Thermoelectric Sensor and Its Application on the Basis of the Hollow PEDOT:PSS Fiber

Polymers
Limin RuanJinling Zhao

Abstract

The thermoelectric (TE) fiber, based on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), which possesses good flexibility, a low cost, good environmental stability and non-toxicity, has attracted more attention due to its promising applications in energy harvesting. This study presents a self-powered flexible sensor based on the TE properties of the hollow PEDOT:PSS fiber. The hollow structure of the fiber was synthesized using traditional wet spinning. The sensor was applied to an application for finger touch, and showed both long-term stability and good reliability towards external force. The sensor had a high scalability and was simple to develop. When figures touched the sensors, a temperature difference of 6 °C was formed between the figure and the outside environment. The summit output voltages of the sensors with 1 to 5 legs gradually increased from 90.8 μV to 404 μV. The time needed for the output voltage to reach 90% of its peak value is only 2.7 s. Five sensors of legs ranging from 1 to 5 were used to assemble the selector. This study may provide a new proposal to produce a self-powered, long-term and stable skin sensor, which is suitable for wearable devices in personal electronic fields.

References

Dec 30, 2014·Angewandte Chemie·Brendan T McGrailEmily Pentzer
Mar 29, 2016·Journal of Materials Chemistry. C, Materials for Optical and Electronic Devices·Zia Ullah KhanXavier Crispin
Mar 30, 2016·Nanoscale·Kun ZhangShiren Wang
Apr 20, 2016·Nature Communications·Jonathan RivnayGeorge G Malliaras
Jan 24, 2018·Small·Ting WangXiaodong Chen
May 19, 2018·ACS Applied Materials & Interfaces·Canlin OuSohini Kar-Narayan
Dec 14, 2018·ACS Applied Materials & Interfaces·Jing LiuJingkun Xu
Dec 24, 2018·ACS Applied Materials & Interfaces·Ting ZhangLei Wei
Dec 24, 2018·ACS Applied Materials & Interfaces·Xiaodong WangFengxing Jiang
Apr 16, 2019·ACS Applied Materials & Interfaces·Emilie DauzonAram Amassian

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Citations

Dec 4, 2020·Polymers·Angelika ZaszczyńskaPaweł Sajkiewicz
Jan 7, 2021·Nano Letters·Chunyang ZhangYongsheng Chen
Sep 2, 2021·ACS Applied Materials & Interfaces·Immanuel PaulrajChia-Jyi Liu

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Methods Mentioned

BETA
scanning electron microscopy
X-ray

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