Effect of L-Ascorbic Acid Solution Concentration on the Thermoelectric Properties of Silver Selenide Flexible Films Prepared by Vacuum-Assisted Filtration.
Effect of L-Ascorbic Acid Solution Concentration on the Thermoelectric Properties of Silver Selenide Flexible Films Prepared by Vacuum-Assisted Filtration.
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L-抗坏血酸溶液浓度对辅助过滤法制备的硒化银柔性薄膜热电性能的影响。
DOI：
10.3390/nano12040624
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发表时间：
2022-02-12
期刊：
影响因子：
--
通讯作者：
Xue C
中科院分区：
文献类型：
--
作者：
Zhang Y;Zhao Y;Guo R;Zhang Z;Liu D;Xue C
目前，已经研究了几种热电材料，例如Ag 2 Te、Bi 2 Te 3和Sb 2 Te 3，用于热电应用。然而，大多数这些材料的毒性和稀有性使它们不适合实际应用。相比之下，硒化银（Ag 2Se）是一种资源丰富且环境友好的热电材料。该研究为制备高性能、低成本、柔性的Ag 2Se热电薄膜提供了一种简便的合成方法。采用化学模板法制备了Ag 2Se纳米材料，系统研究了不同反应溶液浓度对Ag 2Se纳米材料的表征和热电性能的影响。为了便于测试，使用真空辅助过滤在多孔尼龙膜上制备柔性Ag 2Se膜。利用X射线衍射仪、扫描电子显微镜、塞贝克系数测试仪和霍尔测试仪对制备的热电薄膜进行了测试。由最低浓度（18.0 mM）的溶液制备的薄膜表现出最佳的热电性能，在~400 K时的最大功率因数为382.18 μW·m−1·K−2。此外，冷压处理可以有效地提高膜的导电性，而不损坏基底，因为膜的导电性在1500次弯曲循环后仍保持在原始值的90%。
Currently, there are several thermoelectric materials, such as Ag2Te, Bi2Te3, and Sb2Te3, that have been investigated for thermoelectric applications. However, the toxicity and rarity of most of these materials make them unsuitable for practical applications. In contrast, silver selenide (Ag2Se) is an abundant and environment-friendly thermoelectric material. This study provides a facile synthetic approach for preparing high-performance, low-cost, and flexible Ag2Se thermoelectric films. Ag2Se nanomaterials were prepared based on the chemical template method, and the reaction solution concentration was varied to systematically investigate the effects of reaction solution concentration on the characterization and thermoelectric properties of Ag2Se nanomaterials. For convenience of testing, the flexible Ag2Se films were prepared on porous nylon membranes using vacuum-assisted filtration. The prepared thermoelectric films were tested using an X-ray diffractometer, scanning electron microscope, Seebeck coefficient tester, and Hall tester. The film prepared from the solution with the lowest concentration (18.0 mM) demonstrated the best thermoelectric performance, with a maximum power factor of 382.18 μW∙m−1∙K−2 at ~400 K. Additionally, a cold-pressing treatment could effectively enhance the electrical conductivity of the film, without damaging the substrate, as the conductivity of the film remained at 90% of the original value after 1500 bending cycles.
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影响因子：
9.5
作者：
Dun, Chaochao;Hewitt, Corey A.;Carroll, David L.
通讯作者：
Carroll, David L.
影响因子：
10.4
作者：
Kumar, Sunil;Singh, Huidrom Hemojit;Khare, Neeraj
通讯作者：
Khare, Neeraj
影响因子：
2.1
作者：
Nuthongkum, Pilaipon;Sakdanuphab, Rachsak;Sakulkalavek, Aparporn
通讯作者：
Sakulkalavek, Aparporn
影响因子：
2.1
作者：
Ugraskan, Volkan;Karaman, Ferdane
通讯作者：
Karaman, Ferdane
影响因子：
9.5
作者：
Pires, Ana L.;Cruz, Ines F.;Pereira, Andre M.
通讯作者：
Pereira, Andre M.