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Journal of Materials Science: Materials in Electronics

Erschienen in:

13.07.2021

Preparation and characterization of the Ag₂Se flexible films tuned by PVP for wearable thermoelectric generator

verfasst von: Yaxin Zhao, Dan Liu, Zhuqing Yan, Zhidong Zhang, Yongqiu Zheng, Yanjun Zhang, Chenyang Xue

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 15/2021

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Abstract

In recent years, the demand for wearable devices has promoted the research of flexible thermoelectric generators. Herein, this work reports a facile method to prepare the flexible Ag₂Se/polyvinyl pyrrolidone (PVP) composite films. The Ag₂Se nanorods are synthesized by the template method and then mixed with PVP solution to form the composite film optimized by the content of Ag₂Se. The maximum power factor of the film is 16.18 µW m⁻¹ K⁻² at 320 K, and the thermoelectric generator (TEG) has an output voltage and power of 5.49 mV and 55.57 nW at a temperature difference of 40 K, respectively. Moreover, the Ag₂Se/PVP film has good flexibility and can withstand multiple bending, the electrical conductivity reaching 89.8% and 76 % at 500 and 1000, respectively. PVP has an excellent protective capabilities effect so that the TE performance can remain stable in 40 days, and then the electrical conductivity only drops to 89 % of the initial value at 50 days. This work provides an effective method for preparing wearable thermoelectric devices, which can be extended to other composite materials.

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Titel: Preparation and characterization of the Ag2Se flexible films tuned by PVP for wearable thermoelectric generator
verfasst von: Yaxin Zhao
Dan Liu
Zhuqing Yan
Zhidong Zhang
Yongqiu Zheng
Yanjun Zhang
Chenyang Xue
Publikationsdatum: 13.07.2021
Verlag: Springer US
Erschienen in: Journal of Materials Science: Materials in Electronics / Ausgabe 15/2021
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI: https://doi.org/10.1007/s10854-021-06535-9

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