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Research Article | Open Access | Just Accepted

Permeable carbon fiber based thermoelectric film with exceptional EMI shielding performance and sensor capabilities

Junjie ZhuaChuan SunbWanlin FengcMengran ChenaPeng-An Zonga( )Chunlei Wand

aCollege of Materials Science and Engineering, Nanjing Tech University, Nanjing 211800, China

bNational Innovation Institute of Defense Technology, Academy of Military Sciences of the People’s Liberation Army of China, Beijing 100089, China

cInstitute of Nuclear Physics and Chemistry, Innovation Research Team for Advanced Ceramics, China Academy of Engineering Physics, Mianyang 621900, China

dState Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

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Abstract

Thermoelectric (TE) technologies offer a promising approach to directly convert skin heat into electricity for wearable electronics. Recognizing p-type Sb2Te3 and n-type Bi2Te3 as top-performing materials at room temperature, their rigid inorganic structure, with ultra-low moisture permeability, poses challenges in warm and humid conditions, fostering bacterial growth and potential skin issues. To address this, we developed a cross-linked core-shell structure by electrodepositing Sb2Te3 (Bi2Te3) onto carbon fiber (CF). This architecture significantly improved electrical conductivity and the Seebeck coefficient, resulting in a remarkable 300-fold increase in the power factor compared to pure CF. The CF/Sb2Te3 and CF/Bi2Te3 films demonstrated optimal power factors of 450 μW m−1 K−2 and 121 μW m−1 K−2, respectively. Moreover, the fabricated films exhibited outstanding moisture permeability, over 3000 g m−2 day−1, exceptional electromagnetic interference shielding efficiency approaching 93 dB, and versatility as sensors for language assistance and respiratory monitoring. These attributes underline their broad applicability, emphasizing suitability for human health protection in diverse scenarios.

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Journal of Advanced Ceramics
Cite this article:
Zhu J, Sun C, Feng W, et al. Permeable carbon fiber based thermoelectric film with exceptional EMI shielding performance and sensor capabilities. Journal of Advanced Ceramics, 2024, https://doi.org/10.26599/JAC.2024.9220922

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Received: 26 March 2024
Revised: 30 May 2024
Accepted: 03 June 2024
Available online: 05 June 2024

© The author(s) 2024

The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/).

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