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Stretchable and conductive cotton-based fabric for strain sensing, electrothermal heating, and energy storing

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Abstract

Wearable devices are developed rapidly and promising to change the daily life of human beings. However, elastomer- or hydrogel-based electronics need to be stuck to the skin, which may make user feel uncomfortable. Textile electronics can be fixed on the outside of the clothes, not contacting with skin directly. Herein, we prepared a versatile polypyrrole/cotton fabric (PCF) with increasing–decreasing resistance variation during stretching because of the structure changes of the knitted yarn loops. The PCF exhibits a fast response time (110 ms), great durability (10,000 cycles), and excellent monitoring for the bending of back, finger, wrist, and knee. As pyrrole dosage rises, polypyrrole granules accumulate into bigger ones, and form membrane on cotton fibers ultimately. PCF shows a hydrophobicity with contact angle over 140° and an electrothermal temperature of 80.0 °C at 8 V, maintaining 62.8 °C at 40% strain. With dominant diffusion-controlled process, PCF performs gravimetric capacitances of 189.3 F g−1 at 5 mV s−1 and 277.8 F g−1 at 0.46 A g−1, respectively.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (21975107), Natural Science Foundation of Jiangsu Province (SBK2019020945), and China Scholarship Council (No. 202006790090).

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The authors have not disclosed any funding.

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Conceptualization: BW; Methodology: BW; Validation: BW, JP, WH; Formal analysis: BW, JP, WH, YY, CW; Investigation: BW, JP; Data Curation: BW, CW; Writing-Original Draft: BW; Visualization: BW; Funding acquisition: BW, YY, CW; Writing-Review & Editing: YY, CW; Supervision: CW; Project administration: CW.

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Correspondence to Chaoxia Wang.

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Wang, B., Peng, J., Han, W. et al. Stretchable and conductive cotton-based fabric for strain sensing, electrothermal heating, and energy storing. Cellulose 29, 7989–8000 (2022). https://doi.org/10.1007/s10570-022-04736-x

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  • DOI: https://doi.org/10.1007/s10570-022-04736-x

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