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Highly Stretchable, Sensitive, and Multifunctional Thermoelectric Fabric for Synergistic-Sensing Systems of Human Signal Monitoring

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Abstract

Stretchable thermoelectric-based self-powered sensors have attracted widespread attention for wearable electronic devices. However, the development of thermoelectric materials with wearable comfort, green, and multimodal synergy remains challenging. In this paper, we prepared a poly(3,4-ethylenedioxythiophene)/multi-walled carbon nanotube (PEDOT/MWCNT)-based thermoelectric fabric for self-powered strain–temperature dual-parameter sensing via spraying and in situ bio-polymerization. Compared with ferric chloride (FeCl3), used in chemical polymerization, the PEDOT thermoelectric fabric prepared by enzymatic polymerization is not doped with metal ions, making the thermoelectric performance of flexible wearable fabrics more stable. In addition, the energy-filtration effect of PEDOT and MWCNT efficiently enhanced the thermoelectric performance of the fabric. The fabric has over 320% elongation potential and excellent breathability while exhibiting excellent wearability. Moreover, the fabric-based sensor had a wide strain range (1–100%) and temperature detection limit (1 °C). In addition, fabric-based sensors were tested by sewing them directly onto clothing or attachment accessories, and showed a rapid response to changes in human joint bending and microenvironmental temperature differences. Moreover, the sensor could be integrated into an intelligent firefighting suit, to continuously and synergistically monitor health abnormalities in firefighter's body movement and temperature thresholds in the micro-environmental temperature of the suit. The developed self-powered dual-parameter wearable sensor shows fascinating potential for applications in human health monitoring, human–computer interaction devices, and intelligent robotics.

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The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgements

This work was financially supported by the National Key R&D Program of China (2021YFC2104000), Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX22_2349), and National Natural Science Foundation of China (22109054), China Postdoctoral Science Foundation (2021M691264). Thanks for the support from International Joint Research Laboratory for Eco-Textile Technology at Jiangnan University.

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Authors and Affiliations

  1. Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Ave, Wuxi, 214122, Jiangsu, People’s Republic of China

    Yifan Cui, Man Zhou & Qiang Wang

  2. Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai, 201620, People’s Republic of China

    **nyang He, Wendi Liu & Suiyuan Zhu

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  1. Yifan Cui
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  2. **nyang He
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  3. Wendi Liu
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  5. Man Zhou
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  6. Qiang Wang
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Contributions

Conceptualization: YC, XH; methodology: YC, MZ; data curation: YC, XH; writing -original draft preparation: YC, XH; writing -review and editing: QW, WL, SZ; funding acquisition: YC, QW, MZ; supervision: QW.

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Correspondence to Qiang Wang.

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Cui, Y., He, X., Liu, W. et al. Highly Stretchable, Sensitive, and Multifunctional Thermoelectric Fabric for Synergistic-Sensing Systems of Human Signal Monitoring. Adv. Fiber Mater. 6, 170–180 (2024). https://doi.org/10.1007/s42765-023-00339-8

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