Decoupling effect of electrical and thermal properties of Bi2Te3-polypyrrole hybrid material causing remarkable enhancement in thermoelectric performance

被引：9

作者：

Kim, Cham ^{[1
]}

Baek, Ju Young ^{[1
]}

Lopez, David Humberto ^{[2
]}

Kim, Dong Hwan ^{[1
]}

Kim, Hoyoung ^{[1
]}

机构：

[1] DGIST, 333 Techno Jungang Daero, Daegu 42988, South Korea

[2] Univ Arizona, Dept Chem & Environm Engn, 1133 E James E Rogers Way, Tucson, AZ 85721 USA

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2019年 / 71卷

关键词：

Thermoelectric; Hybrid material; Bi2Te3; Energy band junction; Phonon scattering; BISMUTH-TELLURIDE; NANOSTRUCTURED BI2TE3; CHEMICAL-SYNTHESIS; POLYPYRROLE; POLYMERIZATION; FILMS; NANOCOMPOSITES; CONDUCTIVITY; MORPHOLOGY; POLYMERS;

D O I：

10.1016/j.jiec.2018.11.013

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We provided a Bi2Te3-polypyrrole hybrid material, in which energy band junction and phonon scattering effects should appear at the interface of the two components. The hybrid material exhibited increases in electrical resistivity and the Seebeck coefficient due the energy band junction, thus retaining the power factor without loss, whereas showing a great reduction in thermal conductivity because of the phonon scattering at the interface. This significant decoupling of electrical and thermal properties resulted in predominant figures of merit (ZT(max) similar to 1.21 at 100 degrees C and ZT(ave) similar to 1.18 at 50-150 degrees C) among n-type Bi2Te3 or Bi-2(Te,Se)(3) materials previously reported. (C) 2018 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：119 / 126

页数：8

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