Tuning thermoelectric performance by nanostructure evolution of a conducting polymer

Hu, Xincheng; Chen, Guangming; Wang, Xin; Wang, Hanfu

doi:10.1039/c5ta07381b

Cited by 116 publications

(44 citation statements)

References 43 publications

(7 reference statements)

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“…Nanostructured PEDOT can exhibit high TE properties . Chen et al synthesized various PEDOT nanostructures by chemical polymerization in inverse microemulsions . They found that nanostructured PEDOTs can have higher charge carrier mobility than bulk PEDOT owing to more ordered polymer chains.…”

Section: P‐type Te Polymersmentioning

confidence: 99%

Recent Development of Thermoelectric Polymers and Composites

Yao

Fan

Cheng

et al. 2018

Macromol. Rapid Commun.

242

156

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Thermoelectric materials can be used as the active materials in thermoelectric generators and as Peltier coolers for direct energy conversion between heat and electricity. Apart from inorganic thermoelectric materials, thermoelectric polymers have been receiving great attention due to their unique advantages including low cost, high mechanical flexibility, light weight, low or no toxicity, and intrinsically low thermal conductivity. The power factor of thermoelectric polymers has been continuously rising, and the highest ZT value is more than 0.25 at room temperature. The power factor can be further improved by forming composites with nanomaterials. This article provides a review of recent developments on thermoelectric polymers and polymer composites. It focuses on the relationship between thermoelectric properties and the materials structure, including chemical structure, microstructure, dopants, and doping levels. Their thermoelectric properties can be further improved to be comparable to inorganic counterparts in the near future.

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Section: P‐type Te Polymersmentioning

confidence: 99%

Recent Development of Thermoelectric Polymers and Composites

Yao

Fan

Cheng

et al. 2018

Macromol. Rapid Commun.

242

156

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“…In the past few years, the synthesis and investigation of nanostructured PEDOT for different applications are gaining increasing research interest [32][33][34][35][36][37][38][39]. In 2011, Taggart et al first investigated the thermoelectric properties of PEDOT nanowires, which were synthesized by oxidative electropolymerization of 3,4-ethylenedioxythiophene (EDOT) monomer in aqueous LiClO 4 solution via a hard template through a lithographically patterned nanowire electrodeposition (LPNE) approach with non-dependent control over the thickness and width of the nanowire (Figure 1) [34].…”

Section: Pedotmentioning

confidence: 99%

“…Therefore, the thermoelectric properties of PEDOT nanorods can be modified easily and efficiently [40]. In 2015, Hu et al reported the thermoelectric performance of nanostructured PEDOT with various morphologies (Figure 3a-e) by chemical oxidation polymerization in reverse microemulsions with sodium bis(2-ethylhexyl) sulfosuccinate (AOT) as the surfactant [35]. Tuning the quantity of oxidizing agent added and the rate of polymerization gave rise to PEDOT with different nanostructures, which were proved to have great effects on the thermoelectric properties (Figure 3f-h).…”

Section: Pedotmentioning

confidence: 99%

One-Dimensional Nanostructure Engineering of Conducting Polymers for Thermoelectric Applications

et al. 2019

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The past few decades have witnessed considerable progress of conducting polymer-based organic thermoelectric materials due to their significant advantages over the traditional inorganic materials. The nanostructure engineering and performance investigation of these conducting polymers for thermoelectric applications have received considerable interest but have not been well documented. This review gives an outline of the synthesis of various one-dimensional (1D) structured conducting polymers as well as the strategies for hybridization with other nanomaterials or polymers. The thermoelectric performance enhancement of these materials in association with the unique morphologies and structures are discussed. Finally, perspectives and suggestions for the future research based on these interesting nanostructuring methodologies for improvement of thermoelectric materials are also presented.

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“…Compared with inorganic TE materials, conducting polymers based TE materials are low cost, good flexibility, and rich resources materials. Recently, conducting polymers and their composites TE materials have exhibited great potentials applied into TE filed and attracted more and more attention …”

Section: Introductionmentioning

confidence: 99%

Thermally Sensitive N‐Type Thermoelectric Aniline Oligomer‐Block‐Polyethylene Glycol‐Block‐Aniline Oligomer ABA Triblock Copolymers

Cheng

Zhang

et al. 2018

Macro Chemistry & Physics

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High‐performance n‐type thermoelectric polymers are vital in the development of polymer thermoelectric generators (PTEGs). However, the progress is very slow due to their low stability and low thermoelectric properties. Here, aniline oligomer‐block‐polyethylene glycol‐block‐aniline oligomer (ANI)n‐b‐PEO‐b‐(ANI)n) (n = 4, 8, 16) are prepared and studied. The results indicate that the (ANI)n‐b‐PEO‐b‐(ANI)n show unique temperature sensitivity and switch from p‐type to n‐type when the temperature is above 300 K. Differential scanning calorimetry curves show that the Tg of the (ANI)n‐b‐PEO‐b‐(ANI)n is lower than 300 K, indicating that PEO segments of the (ANI)n‐b‐PEO‐b‐(ANI)n easily move above 300 K and have high flexibility. Temperature‐dependent Raman spectra confirm that there are strong interactions between PEO segments and aniline oligomers during the raising temperature, and PEO chains might provide plenty of negative charge at high temperature, which can convert the (ANI)n‐b‐PEO‐b‐(ANI)n into n‐type thermoelectric materials. To adjust the number of aniline unit, (ANI)8‐b‐PEO‐b‐(ANI)8 shows excellent n‐type characteristics with Seebeck coefficient as large as −1171 µV K−1 at 381 K. The strong interaction between PEO and aniline oligomers plays a dominant role in the n‐type thermoelectric performance of the triblock copolymers, which have potential application in the field of PTEGs and temperature sensors.

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Tuning thermoelectric performance by nanostructure evolution of a conducting polymer

Abstract: The thermoelectric performance of PEDOT can be conveniently and effectively tuned by nanostructure evolution.

Cited by 116 publications

References 43 publications

Recent Development of Thermoelectric Polymers and Composites

Recent Development of Thermoelectric Polymers and Composites

One-Dimensional Nanostructure Engineering of Conducting Polymers for Thermoelectric Applications

Thermally Sensitive N‐Type Thermoelectric Aniline Oligomer‐Block‐Polyethylene Glycol‐Block‐Aniline Oligomer ABA Triblock Copolymers

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