Multifunctional durable solid-state thermoelectric sensor enabled by interstitial Co doping in Mg3(Sb, Bi)2

<h2>Summary</h2> Mg<sub>3</sub>(Sb, Bi)<sub>2</sub>-based thermoelectric (TE) reports have focused on increasing conversion efficiency for practical power generation or solid-state cooling, with little investigation into the Seebeck effect in other pioneering fields. This work presents an interstitial cobalt-doping strategy in Mg<sub>3</sub>(Sb, Bi)<sub>2</sub>-based TEs, achieving a TE power factor of ∼27.3 μW cm<sup>−1</sup> K<sup>−2</sup> by improved electrical conductivity, with a compressive strength of ∼400 MPa. More importantly, inspired by optimal carrier mobility and the Seebeck coefficient, a TE sensing prototype device was developed based on Mg<sub>3.19</sub>Co<sub>0.01</sub>Sb<sub>0.5</sub>Bi<sub>1.49</sub>Te<sub>0.01</sub> and demonstrated multifunctional sensing capabilities in respiration monitoring, tactile feedback, remote detection, and liquid recognition, broadening the potential applications of conventional solid-state TEs.

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Publication Details

Journal
Device
Published
2024-09-10
DOI
https://doi.org/10.1016/j.device.2024.100524
Citations
20
Primary Topic
Advanced Thermoelectric Materials and Devices
Type
article
Field-Weighted Citation Impact
2.34

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Multifunctional durable solid-state thermoelectric sensor enabled by interstitial Co doping in Mg3(Sb, Bi)2

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Advanced Thermoelectric Materials and Devices
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Multifunctional durable solid-state thermoelectric sensor enabled by interstitial Co doping in Mg3(Sb, Bi)2

Qian Deng, Huangshui Ma, Qiang Sun, Ran Ang, Bang-Zhou Tian, Yuanqing Mao, Xiang An
article en
20 citations

Abstract

<h2>Summary</h2> Mg<sub>3</sub>(Sb, Bi)<sub>2</sub>-based thermoelectric (TE) reports have focused on increasing conversion efficiency for practical power generation or solid-state cooling, with little investigation into the Seebeck effect in other pioneering fields. This work presents an interstitial cobalt-doping strategy in Mg<sub>3</sub>(Sb, Bi)<sub>2</sub>-based TEs, achieving a TE power factor of ∼27.3 μW cm<sup>−1</sup> K<sup>−2</sup> by improved electrical conductivity, with a compressive strength of ∼400 MPa. More importantly, inspired by optimal carrier mobility and the Seebeck coefficient, a TE sensing prototype device was developed based on Mg<sub>3.19</sub>Co<sub>0.01</sub>Sb<sub>0.5</sub>Bi<sub>1.49</sub>Te<sub>0.01</sub> and demonstrated multifunctional sensing capabilities in respiration monitoring, tactile feedback, remote detection, and liquid recognition, broadening the potential applications of conventional solid-state TEs.

DeviceVol. 2(12)
The University of Queensland (AU), Sichuan University (CN), Southern University of Science and Technology (CN), Chengdu University of Technology (CN)
Sichuan Province Science and Technology Support Program, Graduate Student's Research and Innovation Fund of Sichuan University, National Key Research and Development Program of China Stem Cell and Translational Research
Responsible consumption and production
Openalex Percentile: Top 7%
Advanced Thermoelectric Materials and Devices
2.34
DOIOpen Access PDFOpenAlex
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