High Power Factor of Ag 2 Se/Ag/Nylon Composite Films for Wearable Thermoelectric Devices

A flexible thermoelectric device has been considered as a competitive candidate for powering wearable electronics. Here, we fabricated an n-type Ag Se/Ag composite film on a flexible nylon substrate using vacuum-assisted filtration and a combination of cold and hot pressing. By optimising the Ag/Se...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2022-11, Vol.12 (23)
Main Authors: Wu, Wenhang, Liang, Zheng, Jia, Meng, Li, Yuwei, Guan, Xiongcong, Zhan, Yunfeng, Wen, Jinxiu, Luo, Jianyi
Format: Article
Language:English
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Summary:A flexible thermoelectric device has been considered as a competitive candidate for powering wearable electronics. Here, we fabricated an n-type Ag Se/Ag composite film on a flexible nylon substrate using vacuum-assisted filtration and a combination of cold and hot pressing. By optimising the Ag/Se ratio and the sequential addition and reaction time of AA, an excellent power factor of 2277.3 μW∙m K (corresponding to a of ~0.71) at room temperature was achieved. In addition, the Ag Se/Ag composite film exhibits remarkable flexibility, with only 4% loss and 10% loss in electrical conductivity after being bent around a rod of 4 mm radius for 1000 cycles and 2000 cycles, respectively. A seven-leg flexible thermoelectric device assembled with the optimised film demonstrates a voltage of 19 mV and a maximum power output of 3.48 μW (corresponding power density of 35.5 W m ) at a temperature difference of 30 K. This study provides a potential path to design improved flexible TE devices.
ISSN:2079-4991
2079-4991