Lattice Plainification and Intercalation Advances Power Generation and Thermoelectric Cooling in n‐type Bi₂(Te, Se)₃

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 2, 2025

Abstract Bismuth telluride (Bi 2 Te 3 ) has been the only commercialized material in thermoelectric cooling and waste heat recovery. However, inferior performance for n‐type Bi (Te, Se) largely restricts practical applications. In this study, additional Ag atoms are introduced utilizing lattice plainification strategy to enhance electrical performance. Observations indicate that situate van der Waals layers, acting as dopants increase carrier concentration, bonding with adjacent intercalating form electron transport channels, while also suppressing formation of vacancies boost mobility, substantially favoring transport. Consequently, 2.79 Se 0.21 I 0.004 +0.3%Ag achieves an excellent room‐temperature ZT ≈1.1, Te2 .79 + 0.4%Ag demonstrates a higher average ≈1.1 at 300–523 K. Furthermore, full‐scale cooler using optimized combined commercial p‐type 0.5 Sb 1.5 achieved maximum temperature difference (Δ T max ≈68.3 K 300 larger Δ ≈84.8 343 Additionally, 0.4%Ag/Bi ‐based power generator realizes conversion efficiency ≈6.0% under ≈240 These results outperform devices, illustrating effectiveness thermoelectrics.

Язык: Английский

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Suppressed bipolar effect and high average ZTave in CuO-doped Bi0.46Sb1.54Te3 bulks with a large size

Journal of the European Ceramic Society, Год журнала: 2024, Номер 44(11), С. 6488 - 6494

Опубликована: Апрель 1, 2024

Язык: Английский

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Effects of high entropy combined with Cu/Ag doping on the thermoelectric properties of Bi2Sr2Co2Oy ceramics

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Achieving enhanced thermoelectric and mechanical performance in p-type bismuth telluride through constrained hot deformation

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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Low thermal conductivity and enhanced thermoelectric properties of Cu-substituted Bi2-xCuxSr2Co2Oy ceramics

Ceramics International, Год журнала: 2024, Номер 50(21), С. 42404 - 42411

Опубликована: Авг. 6, 2024

Язык: Английский

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Effect of cooling rate on the microstructure and thermal conductivity of 5 at% Cu–Bi2Te3

Journal of Materials Science, Год журнала: 2024, Номер unknown

Опубликована: Сен. 16, 2024

Язык: Английский

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Influence of Leg Geometry on the Performance of Bi2Te3 Thermoelectric Generators

GAZI UNIVERSITY JOURNAL OF SCIENCE, Год журнала: 2024, Номер unknown, С. 1 - 1

Опубликована: Июль 23, 2024

This study analyzed the significant performance using COMSOL Multiphysics software of thermoelectric modules (TEMs) fabricated from aluminium oxide (Al2O3), copper (Cu), and bismuth telluride (Bi2Te3) materials, with a particular focus on investigating various leg geometries. The TEM design had Al2O3 for insulation, Cu conducting, Bi2Te3 TE legs among Cu. Investigated influence square rectangular heights 2.0, 2.75, 3.5 mm critical parameters such as normalized current density, electric potential, temperature gradient, total internal energy within TEM. Furthermore, impact varying thicknesses in insulator conductor layers was explored. results consistently demonstrated that geometry, particularly when configured height 2.75 mm, outperformed other Consequently, it is suggested to adopt square-shaped measuring 1 × 0.50 thickness 0.125 during manufacturing process. Investigate how differences device are influenced by Seebeck coefficient (S), thermal conductivity (k), electrical (σ). At lower temperatures, modeling reveals enhanced conductivity, highlighting significance S = ± 2.37×10⁻⁴ V/K. illustrates high potential applications generator (TEG) manufacturing.

Язык: Английский

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The Normal/Umklapp/Intervally/Intravally transport property of 2D SnSe

Materials Science in Semiconductor Processing, Год журнала: 2024, Номер 182, С. 108728 - 108728

Опубликована: Июль 24, 2024

Язык: Английский

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层状化合物PbSnS2热电输运性质的第一性原理计算研究

Chinese Science Bulletin (Chinese Version), Год журнала: 2024, Номер unknown

Опубликована: Авг. 1, 2024

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