
Waste Cotton-Derived Fiber-Based Thermoelectric Aerogel for Wearable and Self-Powered Temperature-Compression Strain Dual-Parameter Sensing
Xinyang He, Mingyuan Liu, Jiaxin Cai, Zhen Li, Zhilin Teng, Yunna Hao, Yifan Cui, Jianyong Yu, Liming Wang, Xiaohong Qin
Engineering ›› 2024, Vol. 39 ›› Issue (8) : 235-243.
Waste Cotton-Derived Fiber-Based Thermoelectric Aerogel for Wearable and Self-Powered Temperature-Compression Strain Dual-Parameter Sensing
The rapid development of the global economy and population growth are accompanied by the production of numerous waste textiles. This leads to a waste of limited resources and serious environmental pollution problems caused by improper disposal. The rational recycling of wasted textiles and their transformation into high-value-added emerging products, such as smart wearable devices, is fascinating. Here, we propose a novel roadmap for turning waste cotton fabrics into three-dimensional elastic fiber-based thermoelectric aerogels by a one-step lyophilization process with decoupled self-powered temperature-compression strain dual-parameter sensing properties. The thermoelectric aerogel exhibits a fast compression response time of , a relatively high Seebeck coefficient of , and an ultralow thermal conductivity of less than . The cross-linking of trimethoxy(methyl)silane (MTMS) and cellulose endowed the aerogel with excellent elasticity, allowing it to be used as a compressive strain sensor for guessing games and facial expression recognition. In addition, based on the thermoelectric effect, the aerogel can perform temperature detection and differentiation in self-powered mode with the output thermal voltage as the stimulus signal. Furthermore, the wearable system, prepared by connecting the aerogel-prepared array device with a wireless transmission module, allows for temperature alerts in a mobile phone application without signal interference due to the compressive strains generated during gripping. Hence, our strategy is significant for reducing global environmental pollution and provides a revelatory path for transforming waste textiles into high-value-added smart wearable devices.
Waste textiles / High value-added recycling / Thermoelectrics / Elasticity / Decoupled sensing
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[5] |
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[6] |
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[7] |
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[8] |
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[9] |
|
[10] |
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[11] |
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[12] |
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[13] |
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[14] |
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[15] |
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[16] |
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[17] |
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[18] |
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[19] |
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[20] |
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[21] |
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[22] |
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[23] |
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[24] |
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[25] |
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[26] |
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[27] |
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[28] |
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[29] |
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[30] |
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[31] |
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[32] |
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[33] |
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[34] |
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[35] |
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[36] |
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