Thermoelectric Properties of Polypyrrole Nanotubes

Wang, Yihan; Yin, Qiang; Du, Keming; Mo, Site; Yin, Qinjian

doi:10.1007/s13233-020-8105-1

Cited by 18 publications

(2 citation statements)

References 27 publications

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“…The preparation and application of polypyrrole nanotubes have recently been reviewed . The recent examples of applications include the shielding of electromagnetic radiation, − magnetorheology, adsorbents in oil–water separation, elastic aerogels for stress sensing, electrochemical sensing, electrodes for supercapacitors − and batteries, ,− electrocatalysts, conducting adhesives, thermoelectric materials, − or conducting membranes …”

Section: Introductionmentioning

confidence: 99%

Melamine Sponges Decorated with Polypyrrole Nanotubes as Macroporous Conducting Pressure Sensors

Stejskal

Kopecký

Kasparyan

et al. 2021

ACS Appl. Nano Mater.

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The macropores of melamine sponges were coated in situ during the polymerization of pyrrole with either polypyrrole globules or nanotubes and tested as pressure-sensing materials. The dependence of the conductivity of this compressible material on pressure was determined by the four-point van der Pauw method. The conductivity increased from the order of 10–2 S cm–1 to units of S cm–1 at 10 MPa, and it was higher for nanotubes. The pressure dependence of sponge resistance was also recorded in another experimental setup in the design of a simple low-pressure sensor. The information on electrical properties obtained by both methods is discussed. In addition, the use of the melamine sponge decorated with polypyrrole in fields that do not directly exploit conductivity, such as electromagnetic radiation shielding and/or adsorption of organic dye, is also demonstrated. The study proves the superior performance of polypyrrole nanotubes in all applications.

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Section: Introductionmentioning

confidence: 99%

Melamine Sponges Decorated with Polypyrrole Nanotubes as Macroporous Conducting Pressure Sensors

Stejskal

Kopecký

Kasparyan

et al. 2021

ACS Appl. Nano Mater.

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“…[1][2][3][4][5][6][7] A dimensionless figure of merit ZT = α 2 σT/κ is used to assess TE performance, where α, σ, κ, and T indicate the Seebeck coefficient, electrical conductivity, thermal conductivity, and absolute temperature, respectively. [3,[8][9][10][11][12][13][14] Owing to the low κ of organic TE materials and the difficulty to measure correctly, the power factor (PF = α 2 σ) is often used to evaluate their TE performance. [9,[15][16][17][18] Recently, extensive studies on TE material design, fundamentals in charge generation/transport, and optimization of device architectures have been performed, successfully demonstrating a record high ZT up to 0.75 for poly(3,4-ethy lenedioxythiophene):polystyrene sulfonate (PEDOT:PSS)/ionic liquid (IL) heterostructures.…”

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confidence: 99%

Remarkably High Conductivity and Power Factor in D–D′‐type Thermoelectric Polymers Based on Indacenodithiophene

Tripathi

Seo

Kim

et al. 2022

Adv Elect Materials

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Three p‐type thermoelectric (TE) polymers based on the indacenodithiophene moiety substituted with bis(alkylsulfanyl)methylene side‐chains (IDTS) are synthesized. The TE characteristics of IDTS‐based donor–donor’ (D–D′) type PIDTSDTTT and donor–acceptor (D–A) type polymers, PIDTSBT and PIDTS2FBT are investigated. Remarkably higher electrical conductivity (σ = ≈1000 S cm−1) and power factor (PF = ≈120 μW m−1 K−2) by doping with AuCl3 are measured for PIDTSDTTT compared to D–A type polymers. The higher σ of PIDTSDTTT originates from its higher carrier concentration compared to those of PIDTSBT and PIDTS2FBT. Moreover, the facile polaron‐to‐bipolaron transition is measured, and the charge carriers are calculated to be more stable with extended delocalization in PIDTSDTTT compared to D–A polymers. The significantly higher doping stability in PIDTSDTTT can be explained in terms of the higher conduction band of bipolarons than the valence band of O2 and H2O, which blocks the facile reduction of bipolarons in air. The energetic structures of doped polaron and bipolaron states, as well as pristine TE polymers, must be carefully considered to realize efficient and stable p‐type thermoelectric polymers, where a D–D′ type structure with further enhanced carrier mobility can be considered as a potential molecular framework.

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