Topological Design of Inorganic–Organic Thermoelectric Nanocomposites Based on “Electron–Percolation Phonon–Insulator” Concept

Gao, Xiaolong; He, Minhong; Liu, Bin; Hu, Jizhu; Wang, Yuanyuan; Liang, Ziqi; Zhou, Jun

doi:10.1021/acsaem.8b00615

Cited by 7 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compositing organic–inorganic materials is an effective method to further improve the thermoelectric performance of the polymers, − because composite can combine the advantages of the organic materials (e.g., lightweight and flexible) and inorganic materials (e.g., high TE performance). Previous research has shown that carbon nanotubes (CNTs) are capable of improving thermoelectric properties of composites. − Wang et al demonstrated that the maximum power factor (PF = S 2 σ ) of PEDOT-Tos-PPP/SWCNT films with 35 wt % SWCNT was 37.8 μW m –1 K –2 at room temperature, and it was 1.7 times as high as that of the PEDOT-Tos-PPP films.…”

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.

View full text Add to dashboard Cite

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.

show abstract

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.

View full text Add to dashboard Cite

show abstract

“…The connected NWs make a conductive path, leading to the drastic increase of σ due to the so-called percolation effect. For percolation theory, σ is represented with the weight fraction W of fillers and the percolation threshold W c in three-dimensional systems as follows: In eq , σ quadratically increases when W exceeds W c. − We fitted the experimental data by eq . The fitted line (dashed line) is shown in Figure b, where fitting parameters W c and σ 0 were 45 wt % and 4640 S cm –1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Thermoelectric Properties of PEDOT:PSS Containing Connected Copper Selenide Nanowires Synthesized by the Photoreduction Method

et al. 2022

View full text Add to dashboard Cite

Organic materials have attracted attention for thermoelectric materials reusing low-temperature waste heat. For the thermoelectric performance enhancement of organic materials, the introduction of inorganic nanowires is effective due to the percolation effect. In this study, we synthesized Cu 2 Se NWs by the photoreduction method and prepared poly(3,4-ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS) thin films containing Cu 2 Se NWs by spin-coating PEDOT:PSS and Cu 2 Se NWs alternatively. The composite films exhibited a drastic increase in electrical conductivity at more than 40 wt % Cu 2 Se, and the Cu 2 Se amount threshold was in good agreement with surface structures as observed by a scanning electron microscope. This indicates that the percolation effect of connected Cu 2 Se NWs brought high electrical conductivity. As a result, the composite thin films exhibited a higher power factor than the PEDOT:PSS film. This power factor enhancement by the percolation effect would be expected to contribute to the development of thermoelectric performance enhancement for organic materials.

show abstract

“…However, it was very difficult to prepare the thermoelectric film, thus a protocol and simple method of film preparation to improve the PF value of the PEDOT‐PSS are demanded. Recently, remarkable progress has been achieved in hybrid thermoelectric materials by introducing an inorganic compound or inorganic nanomaterial into a PEDOT‐PSS film . Hybridization of PEDOT and Bi 2 Te 3 or Te nanomaterials with high thermoelectric properties to achieve good performance is extremely effective, but the use of tellurium compounds is limited by the toxicity and rarity of tellurium.…”

Section: Figurementioning

confidence: 99%

Preparation of Ga‐ZnO Nanoparticles Using Microwave and Ultrasonic Irradiation, and the Application of Poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) Hybrid Thermoelectric Films

et al. 2019

View full text Add to dashboard Cite

The addition of inorganic materials with high thermoelectric properties is a popular approach to modulate the performance of Poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) (PEDOT‐PSS), but, the representative hybridization of PEDOT‐PSS and toxic Te or Bi is not practical considering safety. Here, we report a PEDOT‐PSS film including Ga‐ZnO (GZO) nanoparticles, which has higher reproducibility and thermoelectric properties. Interestingly, the PEDOT‐PSS film containing GZO nanoparticle of 1 atom% Ga exhibited a higher in‐plane thermoelectric power factor (38.4 μW m−1 K−2) than the pure PEDOT‐PSS (27.4 μW m−1 K−2), which is one of the highest values when compared to previous metallic oxide/PEDOT‐PSS or PEDOT system. The present results suggest a simple approach for electrical conductivity improvement of PEDOT‐PSS film: the Zn and Ga components are an efficient carrier promoter for improving the crystal growth and conformation of PEDOT.

show abstract

Topological Design of Inorganic–Organic Thermoelectric Nanocomposites Based on “Electron–Percolation Phonon–Insulator” Concept

Cited by 7 publications

References 39 publications

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

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

Thermoelectric Properties of PEDOT:PSS Containing Connected Copper Selenide Nanowires Synthesized by the Photoreduction Method

Preparation of Ga‐ZnO Nanoparticles Using Microwave and Ultrasonic Irradiation, and the Application of Poly(3,4‐ethylenedioxythiophene)‐poly(styrenesulfonate) Hybrid Thermoelectric Films

Contact Info

Product

Resources

About