Journal of Materials Science

, Volume 53, Issue 9, pp 6752–6762 | Cite as

Effectively enhanced thermopower in polyaniline/Bi0.5Sb1.5Te3 nanoplate composites via carrier energy scattering

Energy materials
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Abstract

Carrier energy-filtering effect at organic–inorganic interface has been proved to be very effective for improving the performance of polymer-based thermoelectric composites. To introduce a large amount of organic–inorganic interfaces, Bi0.5Sb1.5Te3 nanoplates (BST NP) are fabricated and embedded into camphorsulfonic acid-doped polyaniline (CSA:PANI) through cryogenic grinding followed by hot pressing. It is found that BST NPs are dispersed uniformly in the matrix to form abundant hybrid interfaces in the CSA:PANI/BST NP composites, which shows great enhancement in Seebeck coefficient and power factor. The improvement can be attributed to energy-filtering effect at the CSA:PANI/BST NP interface, which is supported by the distinct transport behavior between CSA:PANI/BST NP and PANI/BST NP composites. Consequently, the maximum ZT values up to 8.637 × 10−4 at 300 K and 1.64 × 10−3 at 400 K are achieved, which is among the best thermoelectric performance of PANI-based bulk composites.

Notes

Acknowledgements

This work was funded by the National Natural Science Foundation of China (Nos. 51403037, 51774096), the Fundamental Research Funds for the Central Universities (2232017A-07), Shanghai Committee of Science and Technology (No. 16JC1401800), Program for Innovative Research Team in University of Ministry of Education of China (IRT_16R13), DHU Distinguished Young Professor Program, the Natural Science Foundation of Shanghai (17ZR1400900) and the Pujiang Talent Program (17PJ1400200).

Supplementary material

10853_2017_1958_MOESM1_ESM.docx (1.3 mb)
Supplementary material 1 (DOCX 1327 kb)

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsDonghua UniversityShanghaiChina
  2. 2.Institute of Functional MaterialsDonghua UniversityShanghaiChina
  3. 3.School of Material Science and EngineeringJingdezhen Ceramic InstituteJingdezhenChina

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