Employing multi-functional SnSe inclusions to boost the thermoelectric performance of the shear-exfoliated Bi2Te2.7Se0.3

Song, Chunchun; Shi, Xiao-Lei; Pan, Lin; Liu, Wei-Di; Sun, Qiang; Li, Meng; Lu, Chunhua; Liu, Qingfeng; Wang, Yifeng; Chen, Zhi-Gang

doi:10.1016/j.actamat.2023.119023

Cited by 9 publications

(2 citation statements)

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“…Figure c,d shows a comparison of ZT and ZT ave for n-type BTS of this work and other literature. Obviously, the obtained highest ZT and ZT ave for this work are comparative than relevant value reported in typical n-type BTS systems. ,− The results indicate that incorporation of Si 3 N 4 can effectively improve the ZT and ZT ave for BTS.…”

Section: Resultsmentioning

confidence: 99%

Enhancing Thermoelectric Performance of n-Type Bi₂Te_2.7Se_0.3 through Incorporation of Amorphous Si₃N₄ Nanoparticles

Chen,

Li,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

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Bi 2 Te 3 -based thermoelectric (TE) materials are the state-of-the-art compounds for commercial applications near room temperature. Nevertheless, the application of the n-type Bi 2 Te 2.7 Se 0.3 (BTS) is restricted by the comparatively low figure of merit (ZT) and intrinsic embrittlement. Here, we show that through dispersion of amorphous Si 3 N 4 (a-Si 3 N 4 ) nanoparticles both 14% increase in power factor (at 300 K) and 48% decrease in lattice thermal conductivity are simultaneously realized. The increased power factor comes from enhanced thermopower and reduced electrical resistivity while the reduced lattice thermal conductivity originates mainly from scattering of middle-and low-frequency phonons at the incorporated a-Si 3 N 4 nanoparticles. As a result, a large ZT max = 1.19 (at 373 K) and an average ZT ave ∼ 1.12 (300−473 K) with better mechanical properties are achieved for the BTS/0.25 wt % Si 3 N 4 sample. Present results demonstrate that the incorporation of a-Si 3 N 4 is a promising way to improve TE performance.

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Section: Resultsmentioning

confidence: 99%

Enhancing Thermoelectric Performance of n-Type Bi₂Te_2.7Se_0.3 through Incorporation of Amorphous Si₃N₄ Nanoparticles

Chen,

Li,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

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show abstract

“…Thermoelectric material can realize the direct conversion of “heat” and “electricity” through its internal carrier motion, thus realizing the effective utilization of waste heat and energy saving without causing environmental pollution. − It can be widely used in temperature-gradient power generation, thermoelectric cooling, sensors, and solar cells. − Moreover, due to their small size, lightweightedness, and zero emission, thermoelectric materials take an advantageous position in sustainable development. − As an indicator of the thermoelectric performance, the ZT value is calculated as follows: ZT = α 2 σ T /κ, where α, σ, T , and κ denote the Seebeck coefficient, electrical conductivity, absolute temperature, and total thermal conductivity, respectively. − The larger the ZT value of the material is, the better the thermoelectric properties of the material is. − Practical applications require a material with a large α, high σ, and low κ. − These three indicators affect each other, making it difficult to significantly increase the ZT value of the material, which gradually becomes a major challenge for thermoelectric materials. − …”

Section: Introductionmentioning

confidence: 99%

Enhancing Thermoelectric Properties of Bi₂Te₃-Based Pellets through Low-Temperature Liquid Phase Sintering and Heat Treatment

Liu,

Zheng,

Cai

et al. 2023

ACS Appl. Energy Mater.

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Advances in flexible inorganic thermoelectrics

Shi,

Cao,

Chen

et al. 2023

EcoEnergy

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Solid‐state bismuth telluride‐based thermoelectric devices enable the generation of electricity from temperature differences and have been commercially applied in various fields. However, in many scenarios, the surface of the heat source is not flat. Therefore, it is crucial to develop flexible thermoelectric materials and devices to efficiently utilize heat sources and expand their applications. Compared with organic thermoelectric materials and devices, inorganic flexible thermoelectric materials and devices have much higher thermoelectric performance and stability. Considering the rapid development in this research field, we carefully summarize the design principles, structures, and thermoelectric properties of inorganic flexible materials and their devices reported in the recent 3 years, including sulfides, selenides, tellurides, and composite materials designed based on these inorganics. The structural designs of flexible thermoelectric devices based on micro‐sized bulk materials are also carefully summarized. Additionally, we overview the mechanical stability and methods for reducing internal resistance for designs of inorganic flexible thermoelectric devices. In the end, we provide outlooks on future research directions for inorganic flexible thermoelectric materials and devices. This review will help guide thermoelectric researchers, beginners, and students.

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Employing multi-functional SnSe inclusions to boost the thermoelectric performance of the shear-exfoliated Bi2Te2.7Se0.3

Cited by 9 publications

References 57 publications

Enhancing Thermoelectric Performance of n-Type Bi₂Te_2.7Se_0.3 through Incorporation of Amorphous Si₃N₄ Nanoparticles

Enhancing Thermoelectric Performance of n-Type Bi₂Te_2.7Se_0.3 through Incorporation of Amorphous Si₃N₄ Nanoparticles

Enhancing Thermoelectric Properties of Bi₂Te₃-Based Pellets through Low-Temperature Liquid Phase Sintering and Heat Treatment

Advances in flexible inorganic thermoelectrics

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Employing multi-functional SnSe inclusions to boost the thermoelectric performance of the shear-exfoliated Bi2Te2.7Se0.3

Cited by 9 publications

References 57 publications

Enhancing Thermoelectric Performance of n-Type Bi2Te2.7Se0.3 through Incorporation of Amorphous Si3N4 Nanoparticles

Enhancing Thermoelectric Performance of n-Type Bi2Te2.7Se0.3 through Incorporation of Amorphous Si3N4 Nanoparticles

Enhancing Thermoelectric Properties of Bi2Te3-Based Pellets through Low-Temperature Liquid Phase Sintering and Heat Treatment

Advances in flexible inorganic thermoelectrics

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Enhancing Thermoelectric Performance of n-Type Bi₂Te_2.7Se_0.3 through Incorporation of Amorphous Si₃N₄ Nanoparticles

Enhancing Thermoelectric Performance of n-Type Bi₂Te_2.7Se_0.3 through Incorporation of Amorphous Si₃N₄ Nanoparticles

Enhancing Thermoelectric Properties of Bi₂Te₃-Based Pellets through Low-Temperature Liquid Phase Sintering and Heat Treatment