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

Overview

Journal Nanomaterials (Basel)

Date 2022 Dec 11

PMID 36500860

Authors

Wenhang Wu

Zheng Liang

Meng Jia

Yuwei Li

Xiongcong Guan

Yunfeng Zhan

Jinxiu Wen

Jianyi Luo

Affiliations

Soon will be listed here.

Abstract

A flexible thermoelectric device has been considered as a competitive candidate for powering wearable electronics. Here, we fabricated an n-type AgSe/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 AgSe/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.

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