Bi<sub>2</sub>Te<sub>3</sub>-based wearable thermoelectric generator with high power density: from structure design to application

Yuan, Xiong; Li, Zhenming; Shao, Yuying; Yang, Dongwang; Hu, Kai; You, Han; Xu, Zhuoming; Hua, Siheng; Liu, Wei; Peng, Peng; Yan, Yonggao; Tang, Xinfeng

doi:10.1039/d2tc00426g

Cited by 19 publications

(15 citation statements)

References 42 publications

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“…In addition, the detailed preparation process for the w-TEG can be found in our previous work. 18,22,50 The top substrate was still cut along the electronic circuit to ensure the exibility of the device. Fig.…”

Section: Design and Preparation Of An Excellent W-tegmentioning

confidence: 99%

“…[15][16][17][18] Therefore, integrating wearable electronic equipment with TEG when is expected to improve its working endurance. [19][20][21][22] In order to harvest as much energy from the human body as possible, wearable thermoelectric generators (w-TEGs) must t closely to the skin. [23][24][25] To our knowledge, compared with thin-lm-based TEGs and conductive-polymer-based TEGs, TEGs with exible connections between inorganic-material-based TE Fig.…”

Section: Introductionmentioning

confidence: 99%

“…15–18 Therefore, integrating wearable electronic equipment with TEG when is expected to improve its working endurance. 19–22…”

Section: Introductionmentioning

confidence: 99%

“…30 Recently, we reported a bendable and high-output-performance TEG (454.9 μW cm −2 under a temperature difference of 10 °C, T h = 33 °C, T c = 23 °C) utilizing rigid TE legs (p-type: Bi 0.5 Sb 1.5 Te 3 /n-type: Bi 2 Te 2.7 Se 0.3 ) assembled on a flexible polyimide substrate. 22 To ensure that the generator exhibited some flexibility, the upper substrate was cut into blocks without affecting the electrical path.…”

Section: Introductionmentioning

confidence: 99%

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Optimized thermal design for excellent wearable thermoelectric generator

Yang

Hui

et al. 2022

J. Mater. Chem. A

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Section: Design and Preparation Of An Excellent W-tegmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…15–18 Therefore, integrating wearable electronic equipment with TEG when is expected to improve its working endurance. 19–22…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimized thermal design for excellent wearable thermoelectric generator

Yang

Hui

et al. 2022

J. Mater. Chem. A

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“…MDPI and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions, or products referred to in the content. contains no mechanical moving parts, thus requiring no maintenance, high reliability, and noiseless operation, while being lightweight, compact, and taking up little space [14][15][16][17]. Furthermore, wearable thermoelectric generators (w-TEGs) have been studied by many scholars [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

High-Performance Wearable Bi2Te3-Based Thermoelectric Generator

Xing¹,

Tang²,

Wang³

et al. 2023

Preprint

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Wearable thermoelectric generators (w-TEGs) convert thermal energy into electrical energy to realize self-powering of intelligent electronic devices, thus reducing the burden of battery replacement and charging, and improving the usage time and efficiency of electronic devices. Through finite element simulation, this study successfully designed high-performance thermoelectric generator and made it into wearable thermoelectric module by adopting “rigid device - flexible connection” method. It was found that higher convective heat transfer coefficient on cold-end leads to larger effective temperature difference and better power generation performance of device in typical wearable scenario. Meanwhile, at same convective heat transfer coefficient on the cold-end, longer TE leg length leads to larger temperature difference established at both ends of device, larger device output power and open-circuit voltage. However, when the convective heat transfer coefficient increases to a certain level, optimization effect of increasing TE leg length on device power generation performance will gradually diminish. For devices with fixed temperature difference between two ends, longer TE leg length leads to higher resistance of TEG, resulting in lower device output power but slight increase in open-circuit voltage. Finally, sixteen 16×4×2 mm2 TEGs (L=1.38 mm, W=0.6 mm) and two modules were fabricated and tested. At hot end temperature Th=33 ℃ and cold end temperature Tc=30 ℃, the actual maximum output power Pout of TEG is about 0.2 mW, and the actual maximum output power Pout of TEG module is about 1.602 mW, which is highly consistent with the simulated value. This work brings great convenience to research and development of wearable thermoelectric modules and provides new, environmentally friendly and efficient power solution for wearable devices.

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Self‐Powered Temperature Electronic Skin Based on Island‐Bridge Structure and Bi‐Te Micro‐Thermoelectric Generator for Distributed Mini‐Region Sensing

Kang,

Qu,

Sun

et al. 2023

Advanced Materials

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Thermoelectric (TE) effect based temperature sensor can accurately convert temperature signal into voltage without external power supply, which have great application prospects in self‐powered temperature electronic skin (STES). But the fabrication of stretchable and distributed STES still remains a challenge. Here, a novel STES design strategy is proposed by combining flexible island‐bridge structure with BiTe‐based micro thermoelectric generator (μ‐TEG). Furthermore, a 4×4 vertical temperature sensor array with good stretchability and distributed sensing property has been fabricated for the first time. The interfacial chemical bonds located between the rigid islands (μ‐TEG) and the flexible substrate (PDMS) endow the STES with excellent stretchability, and its sensing performance remains unchanged under 30% strain (the maximum strain of human skin). Moreover, the STES sensing unit possesses high sensitivity (729 μV/K), rapid response time (0.157 s) and high spatial resolution (2.75×2.75 mm2). As a proof of concept, we demonstrate the application of the STES in the detection of mini‐region heat sources in various scenarios including non‐contact spatial temperature responsing, intelligent robotic thermosensing and wearable temperature sensing. Such an inspiring design strategy is expected to provide guidance for the design and fabrication of wearable self‐powered temperature sensors.This article is protected by copyright. All rights reserved

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Bi₂Te₃-based wearable thermoelectric generator with high power density: from structure design to application

Abstract: For the optimized TEG, heat collection with a copper film at the skin end and a copper foam heat sink at the air end were installed to improve the power generation performance of the TEG. When the wearer is running outdoors, the power density is 138.46 μW cm−2.

Cited by 19 publications

References 42 publications

Optimized thermal design for excellent wearable thermoelectric generator

Optimized thermal design for excellent wearable thermoelectric generator

High-Performance Wearable Bi2Te3-Based Thermoelectric Generator

Self‐Powered Temperature Electronic Skin Based on Island‐Bridge Structure and Bi‐Te Micro‐Thermoelectric Generator for Distributed Mini‐Region Sensing

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Bi2Te3-based wearable thermoelectric generator with high power density: from structure design to application

Abstract: For the optimized TEG, heat collection with a copper film at the skin end and a copper foam heat sink at the air end were installed to improve the power generation performance of the TEG. When the wearer is running outdoors, the power density is 138.46 μW cm−2.

Cited by 19 publications

References 42 publications

Optimized thermal design for excellent wearable thermoelectric generator

Optimized thermal design for excellent wearable thermoelectric generator

High-Performance Wearable Bi2Te3-Based Thermoelectric Generator

Self‐Powered Temperature Electronic Skin Based on Island‐Bridge Structure and Bi‐Te Micro‐Thermoelectric Generator for Distributed Mini‐Region Sensing

Contact Info

Product

Resources

About

Bi₂Te₃-based wearable thermoelectric generator with high power density: from structure design to application