High thermoelectric performance of flexible Ag/Ag2Se composite film on nylon for low-grade energy harvesting

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外文摘要：In this work,Ag/Ag2Se composite films with excellent thermoelectric(TE)properties and flexibility are prepared based on a simple one-pot method.By adjusting the nominal ratios of Ag/Se,an optimal Ag/Ag2Se composite film shows a large power factor of～2275 μW m-1 K-2 at 300 K.Such an outstand-ing TE performance of the composite film is due to the unique microstructure and the synergistic effect between the Ag and Ag2Se.Meanwhile,the composite film also shows outstanding flexibility(～91.8％of the initial electrical conductivity is maintained,and the S is unchanged after 1500 bending cycles with a bending radius of 4 mm).Furthermore,a 4-leg flexible TE generator assembled with the optimal film produces a voltage of 14.06 mV and 4.96 μW at a temperature difference of 30.4 K.This work provides a new inspiration for the preparation of flexible Ag2Se-based films with excellent TE performance near room temperature.

外文关键词：

ThermoelectricAg/Ag2SeFlexibleFilmPower generator

作者：

Ying Liu、Jiajia Li、Zixing Wang、Ping Wei、Wenyu Zhao、Lidong Chen、Kefeng Cai

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作者单位：

Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education,Shanghai Key Laboratory of Development and Application for Metal-Functional Materials,School of Materials Science & Engineering,Tongji University,Shanghai 201804,China

State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China

University of Chinese Academy of Sciences,Beijing 100049,China

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of China

项目编号：

9216311851972234

出版年：

2024

DOI：

10.1016/j.jmst.2023.08.059

材料科学技术(英文版)