Enhancing thermoelectric properties of organic composites through hierarchical nanostructures

Scientific Reports
Kun ZhangShiren Wang

Abstract

Organic thermoelectric (TE) materials are very attractive due to easy processing, material abundance, and environmentally-benign characteristics, but their potential is significantly restricted by the inferior thermoelectric properties. In this work, noncovalently functionalized graphene with fullerene by π-π stacking in a liquid-liquid interface was integrated into poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate). Graphene helps to improve electrical conductivity while fullerene enhances the Seebeck coefficient and hinders thermal conductivity, resulting in the synergistic effect on enhancing thermoelectric properties. With the integration of nanohybrids, the electrical conductivity increased from ~10,000 to ~70,000 S/m, the thermal conductivity changed from 0.2 to 2 W·K(-1)m(-1) while the Seebeck coefficient was enhanced by around 4-fold. As a result, nanohybrids-based polymer composites demonstrated the figure of merit (ZT) as high as 6.7 × 10(-2), indicating an enhancement of more than one order of magnitude in comparison to single-phase filler-based polymer composites with ZT at the level of 10(-3).

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Citations

Mar 29, 2016·ACS Applied Materials & Interfaces·Xiangqing WangHui Wu
Mar 31, 2016·ACS Applied Materials & Interfaces·Kunli GohYuan Chen
Aug 12, 2015·ACS Applied Materials & Interfaces·Edward P TomlinsonBryan W Boudouris
Mar 25, 2017·Nanomaterials·Julián David CorreaMónica Pacheco
Apr 27, 2017·The Journal of Physical Chemistry Letters·Ashutosh Giri, Patrick E Hopkins
Nov 24, 2016·Science and Technology of Advanced Materials·Prasenjit KarSamir Kumar Pal
Jan 23, 2018·Advanced Materials·Jeffrey L BlackburnJaime C Grunlan
Aug 5, 2015·Scientific Reports·Liang ChenSatish Kumar
Mar 26, 2015·Scientific Reports·Yong DuTong Lin
May 31, 2019·Advanced Materials·Yuan WangZhi-Gang Chen
May 5, 2020·Physical Chemistry Chemical Physics : PCCP·Fredrik O L JohanssonAndreas Lindblad
Mar 15, 2016·Chemistry, an Asian Journal·Jian XieQichun Zhang
Sep 21, 2018·Materials·Mohammadmehdi Aghelinejad, Siu Ning Leung
Jan 9, 2019·AAPS PharmSciTech·Vishakha RathodSanjay Tiwari
Dec 6, 2018·Micromachines·Mario CulebrasChungyeon Cho
Dec 30, 2014·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Wonsang KohSeung Soon Jang
Sep 18, 2014·Materials·Mario CulebrasAndrés Cantarero
Sep 20, 2017·Journal of the American Chemical Society·Hiroaki NishinoTakahiro Kondo
Jan 20, 2021·ACS Biomaterials Science & Engineering·Tsung-Han LeeShan-Hui Hsu
Oct 6, 2018·ACS Applied Energy Materials·Diego NavaMario Caironi
May 30, 2019·ACS Applied Materials & Interfaces·Srishti ChughAnupama B Kaul
Oct 12, 2021·ACS Sustainable Chemistry & Engineering·Pier Giorgio SchiaviFrancesca Pagnanelli

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Methods Mentioned

BETA
X-ray
electron scattering
transmission
scanning electron microscopy

Software Mentioned

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