Thermoelectric Performance of Mechanically Mixed BixSb2-xTe3—ABS Composites

Viskadourakis, Z.; Drymiskianaki, Argiri; Papadakis, Vassilis; Ioannou, Ioanna; Kyratsi, Theodora; Kenanakis, George

doi:10.3390/ma14071706

Cited by 6 publications

(5 citation statements)

References 43 publications

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“…In numerous studies, multiple methods for increasing zT have been investigated, with particular attention to reducing both thermal conductivity and electrical resistivity. These studies include the formation of state-of-the-art alloy TE materials (e.g., PbTe-Ge, 18 Pb 0.75 Sn 0.25 Te 19 ), nanocrystalline compounds (e.g., Bi 2 Te 3 20), nanostructured alloys (e.g., Bi-Sb-Te 21 and Si-Ge 22 ), halide perovskites, 23 skutterudites, 24 composites 25 and copolymers. 26 Large-scale TEG devices can only be realized if thermoelectric modules, consisting of efficient and cost-effective TE materials are produced.…”

Section: Introductionmentioning

confidence: 99%

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A hierarchically modified fibre-reinforced polymer composite laminate with graphene nanotube coatings operating as an efficient thermoelectric generator

Mytafides,

Tzounis,

Tsirka

et al. 2024

Mater. Adv.

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Section: Introductionmentioning

confidence: 99%

“…, Bi 2 Te 3 20 ), nanostructured alloys ( e.g. , Bi–Sb–Te 21 and Si–Ge 22 ), halide perovskites, 23 skutterudites, 24 composites 25 and copolymers. 26…”

Section: Introductionmentioning

confidence: 99%

A hierarchically modified fibre-reinforced polymer composite laminate with graphene nanotube coatings operating as an efficient thermoelectric generator

Mytafides,

Tzounis,

Tsirka

et al. 2024

Mater. Adv.

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“…Thermoelectric composites based on conductive polymers can be prepared via solution mixing, interfacial polymerization and in situ chemical oxidative polymerization [16,17]. Physical (or mechanical) mixing was also reported to prepare PEDOT:PSS-Bi 2 Te 3 (PE-DOT:PSS: ZT max = 1.0 × 10 −2 ), PANI-Bi 2 Te 3 (PANI: ZT max = 2.67 × 10 −4 -1.1 × 10 −2 ) [18] and Acrylonitrile-Butadiene-Styrene (ABS)-Bi x Sb 2-x Te 3 [19]. Although in those examples the recorded ZT values are very low, as already mentioned, such composites exhibit distinct advantages over all-inorganic thermoelectric materials, including high flexibility, low cost and easy processability.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Properties of Polyaniline/Bismuth Antimony Telluride Composite Materials Prepared via Mechanical Mixing

Hadjipanteli,

Ioannou,

Krasia-Christoforou

et al. 2023

Applied Sciences

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Organic-based thermoelectric composites are highly promising for low-temperature heat-to-electrical energy conversion applications due to their low toxicity, cost-effectiveness, facile synthesis and easy processing. Potential applications of such materials include, among others, low-temperature waste heat recovery and body heat use, such as wearable thermoelectric devices and sensors. Due to the lack of studies on organic (matrix)–inorganic (additive) thermoelectric composites prepared via mechanical mixing with respect to the processing parameters and thermoelectric performance, this work aims to contribute in this direction. More precisely, composite pellets were prepared starting from polyaniline (PANI)/bismuth antimony telluride mixed powders using a mechanical press. The processing parameters investigated included temperature, pressure and processing time, along with the inorganic additive (bismuth antimony telluride) content introduced within the composites. The experimental data revealed that the processing temperature and the additive content had the most significant effect, since their increase led to an enhancement in the composites’ thermoelectric performance. The optimal ZT (2.93 × 10−3) recorded at 130 ∘C corresponded to PANI-BST composites with a 30 wt.% BST content, prepared at a processing temperature of 80 ∘C, a processing time of 75 min and under 2 tons of pressure.

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“…From the formula, it can be seen that there are two ways to improve the thermoelectric performance: increasing the power factor (σS 2 ) or reducing the thermal conductivity. The total thermal conductivity (κ tot ) is composed of the lattice thermal conductivity (κ lat ) and electronic thermal conductivity (κ ele ), κ tot = κ lat + κ ele [21][22][23]. κ ele is the electronic thermal conductivity calculated using the Wiedemann-Franz law κ ele = LσT, where L is the Lorenz constant, T is the absolute temperature, and σ is proportional to the electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

Effect of Synthesis Factors on Microstructure and Thermoelectric Properties of FeTe2 Prepared by Solid-State Reaction

Zhang,

Qin,

Sun

et al. 2023

Materials

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The alloying compound FeTe2 is a semi-metallic material with low thermal conductivity and has the potential to become a thermoelectric material. Single-phase FeTe2 compounds are synthesized using a two-step sintering method, and the effects of the optimal sintering temperature, holding temperature, and holding time on the thermoelectric properties of the alloy compound FeTe2 are investigated. The phase composition, microstructure, and electrical transport properties of the FeTe2 compound are systematically analyzed. The results show that single-phase FeTe2 compounds can be synthesized within the range of a sintering temperature of 823 K and holding time of 10~60 min, and the thermoelectric properties gradually deteriorate with the prolongation of the holding time. Microstructural analysis reveals that the sample of the alloy compound FeTe2 exhibits a three-dimensional network structure with numerous fine pores, which can impede thermal conduction and thus reduce the overall thermal conductivity of the material. When the sintering temperature is 823 K and the holding time is 30 min, the sample achieves the minimum electrical resistivity of 6.9 mΩ·cm. The maximum Seebeck coefficient of 65.48 μV/K is obtained when the sample is held at 823 K for 10 min; and under this condition, the maximum power factor of 59.54 μW/(m·K2) is achieved. In the whole test temperature range of 323~573 K, when the test temperature of the sample is 375 K, the minimum thermal conductivity is 1.46 W/(m·K), and the maximum ZT is 1.57 × 10−2.

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Thermoelectric Performance of Mechanically Mixed BixSb2-xTe3—ABS Composites

Cited by 6 publications

References 43 publications

A hierarchically modified fibre-reinforced polymer composite laminate with graphene nanotube coatings operating as an efficient thermoelectric generator

A hierarchically modified fibre-reinforced polymer composite laminate with graphene nanotube coatings operating as an efficient thermoelectric generator

Thermoelectric Properties of Polyaniline/Bismuth Antimony Telluride Composite Materials Prepared via Mechanical Mixing

Effect of Synthesis Factors on Microstructure and Thermoelectric Properties of FeTe2 Prepared by Solid-State Reaction

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