Enhanced thermoelectric properties of hybridized conducting aerogels based on carbon nanotubes and pyrolyzed resorcinol–formaldehyde resin

Zhao, Lijuan; Zhao, Jie; Sun, Xijing; Li, Quan; Wu, Jinrong; Zhang, Aiping

doi:10.1016/j.synthmet.2015.03.036

Cited by 17 publications

(9 citation statements)

References 55 publications

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“…c Figure of merit of the samples with different wall thickness as a function of temperature. Dash lines from bulk crystalline Si 20 , 28 and polycristalline Si 28 . Dot line represents the values obtained from the work of Kessler et al 23 .…”

Section: Resultsmentioning

confidence: 99%

Large-area and adaptable electrospun silicon-based thermoelectric nanomaterials with high energy conversion efficiencies

et al. 2018

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Large amounts of waste heat generated in our fossil-fuel based economy can be converted into useful electric power by using thermoelectric generators. However, the low-efficiency, scarcity, high-cost and poor production scalability of conventional thermoelectric materials are hindering their mass deployment. Nanoengineering has proven to be an excellent approach for enhancing thermoelectric properties of abundant and cheap materials such as silicon. Nevertheless, the implementation of these nanostructures is still a major challenge especially for covering the large areas required for massive waste heat recovery. Here we present a family of nano-enabled materials in the form of large-area paper-like fabrics made of nanotubes as a cost-effective and scalable solution for thermoelectric generation. A case study of a fabric of p-type silicon nanotubes was developed showing a five-fold improvement of the thermoelectric figure of merit. Outstanding power densities above 100 W/m2 at 700 °C are therefore demonstrated opening a market for waste heat recovery.

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Section: Resultsmentioning

confidence: 99%

Large-area and adaptable electrospun silicon-based thermoelectric nanomaterials with high energy conversion efficiencies

et al. 2018

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“…It is well-known that the thermal conductivity is mainly divided into the electrical thermal conductivity (κe) and the lattice thermal conductivity (κl): κ = κe + κl [23]. Reducing κl is one of the effective ways to improve the zT value.…”

Section: Resultsmentioning

confidence: 99%

“…For example, PEDOT composites generate zT = 0.42 at room temperature, which is comparable to those of some traditional inorganic materials [6,[16][17][18][19][20]. Organic/inorganic hybridization is another promising way to improve the thermoelectric performance of polymers [21][22][23]. Zhang et al [24] reported that the template-directed in situ polymerization preparation of nanocomposites of PEDOT:poly(4-styrenesulfonic) (PSS) coated with multiwalled carbon nanotubes (MWCNTs) can enhance the thermoelectric properties.…”

Section: Introductionmentioning

confidence: 95%

Ultralight conducting PEDOT:PSS/carbon nanotube aerogels doped with silver for thermoelectric materials

Sun

Zhao

et al. 2017

Sci. China Mater.

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A significant enhancement in the thermoelectric performance was observed for three-dimensional conducting aerogels, which were obtained from poly(3,4-ethylenedioxythiophene) : poly(4-styrenesulfonic) (PEDOT:PSS) and multiwalled carbon nanotubes (MWCNTs) suspensions by adding different concentrations of metallic silver (Ag). It was found that the electrical conductivity and Seebeck coefficient could be simultaneously increased with the unique structure. Moreover, the conducting aerogels have an ultralow thermal conductivity (0.06 W m −1 K −1 ) and a large Brunauer-Emmett-Teller surface area (228 m 2 g −1 ). The highest figure of merit (zT) value in this study was 7.56×10 −3 at room temperature upon the addition of 33.32 wt.% Ag. Although the zT value was too low, our work may provide new insights into the design and development of the thermoelectric material for applications. Further investigation with PEDOT:PSS aerogels will be continued to get an economical, lightweight, and efficient polymer thermoelectric material.

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“…Recently, the special aerogel structure capable of suppressing thermal conductivity has been introduced into TE materials, such as PANI-based aerogels, PEDOT-based aerogels, , and carbon nanotubes and graphene composite aerogels. − For example, Tan et al fabricated graphene oxide (rGO)/single-walled carbon nanotube (SWCNT) hybrid aerogels with an ultralow thermal conductivity of 0.021 W m –1 K –1 and ZT = 8.03 × 10 –3 at room temperature. Thongkham et al prepared a self-assembled Bi 2 Te 3 nanowire-PEDOT:PSS hybrid foam with a thermal conductivity of 0.047 W m –1 K –1 and ZT of 0.048.…”

Section: Introductionmentioning

confidence: 99%

High Thermoelectric and Flexible PEDOT/SWCNT/BC Nanoporous Films Derived from Aerogels

Jia

Лю

et al. 2019

ACS Sustainable Chem. Eng.

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Recently, aerogels have been considered as hopeful thermoelectric (TE) materials because of their unique ultralow thermal conductivity compared to conventional bulk/film materials. However, their electrical conductivity cannot meet the requirement of good TE materials due to their highly porous feature. Herein, we composited poly(3,4theylenedioxythiophene) (PEDOT) with SWCNT and bacterial cellulose (BC) to synthesize nanoporous PEDOT/ SWCNT/BC films that can achieve high electrical and low thermal conductivity simultaneously by post-processing of their hybrid aerogels. A relatively high electrical conductivity of 290.6 S/cm and a low thermal conductivity of 0.13 W m −1 K −1 have been achieved for free-standing PEDOT/SWCNT/BC-32% film at room temperature. Furthermore, the films show an outstanding flexibility and fracture strength of 1.6 MPa and an elongation at break of 2.13%. The unique advantages of excellent flexibility and high electrical conductivity as well as low thermal conductivity make PEDOT/SWCNT/BC films have broad prospects in wearable thermoelectric applications.

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Enhanced thermoelectric properties of hybridized conducting aerogels based on carbon nanotubes and pyrolyzed resorcinol–formaldehyde resin

Cited by 17 publications

References 55 publications

Large-area and adaptable electrospun silicon-based thermoelectric nanomaterials with high energy conversion efficiencies

Large-area and adaptable electrospun silicon-based thermoelectric nanomaterials with high energy conversion efficiencies

Ultralight conducting PEDOT:PSS/carbon nanotube aerogels doped with silver for thermoelectric materials

High Thermoelectric and Flexible PEDOT/SWCNT/BC Nanoporous Films Derived from Aerogels

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