Effects of MoS2 addition on the thermoelectric properties of Bi2O2Se

Yuheng Gao; Xin Niu; Lin Pan; Yudong Lang; Changchun Chen; Yifeng Wang

doi:10.1016/j.solidstatesciences.2023.107147

Effects of MoS₂ addition on the thermoelectric properties of Bi₂O₂Se

Yuheng Gao, Xin Niu, Lin Pan, Yudong Lang, Changchun Chen, Yifeng Wang

College of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

In this study, the effects of MoS₂ addition on the thermoelectric properties of Bi₂O₂Se were investigated. The results show that the introduction of MoS₂ can improve the efficiency of the liquid assisted shear exfoliation process, increase the porosity and inhibit the grain growth of Bi₂O₂Se. Accordingly, the electrical conductivity decreases first and then increases with the increase of the MoS₂ content. Besides, the absolute Seebeck coefficient |S| of the composite sample rises first and then decreases with the increase of the MoS₂ content due to the offset effect between |S| and σ. In addition, the enhanced phonon scattering combined with the increased porosity by MoS₂ addition significantly inhibited the lattice thermal conductivity of Bi₂O₂Se. Finally, a ZT_max of 0.55 for 0.3 mol%MoS₂/Bi₂O₂Se at 773 K was obtained.

Original language	English
Article number	107147
Journal	Solid State Sciences
Volume	138
DOIs	https://doi.org/10.1016/j.solidstatesciences.2023.107147
State	Published - Apr 2023

Keywords

BiOSe
MoS
Shear exfoliation
Thermoelectric

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10.1016/j.solidstatesciences.2023.107147

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title = "Effects of MoS2 addition on the thermoelectric properties of Bi2O2Se",

abstract = "In this study, the effects of MoS2 addition on the thermoelectric properties of Bi2O2Se were investigated. The results show that the introduction of MoS2 can improve the efficiency of the liquid assisted shear exfoliation process, increase the porosity and inhibit the grain growth of Bi2O2Se. Accordingly, the electrical conductivity decreases first and then increases with the increase of the MoS2 content. Besides, the absolute Seebeck coefficient |S| of the composite sample rises first and then decreases with the increase of the MoS2 content due to the offset effect between |S| and σ. In addition, the enhanced phonon scattering combined with the increased porosity by MoS2 addition significantly inhibited the lattice thermal conductivity of Bi2O2Se. Finally, a ZTmax of 0.55 for 0.3 mol%MoS2/Bi2O2Se at 773 K was obtained.",

keywords = "BiOSe, MoS, Shear exfoliation, Thermoelectric",

author = "Yuheng Gao and Xin Niu and Lin Pan and Yudong Lang and Changchun Chen and Yifeng Wang",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Masson SAS",

year = "2023",

month = apr,

doi = "10.1016/j.solidstatesciences.2023.107147",

language = "英语",

volume = "138",

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TY - JOUR

T1 - Effects of MoS2 addition on the thermoelectric properties of Bi2O2Se

AU - Gao, Yuheng

AU - Niu, Xin

AU - Pan, Lin

AU - Lang, Yudong

AU - Chen, Changchun

AU - Wang, Yifeng

PY - 2023/4

Y1 - 2023/4

N2 - In this study, the effects of MoS2 addition on the thermoelectric properties of Bi2O2Se were investigated. The results show that the introduction of MoS2 can improve the efficiency of the liquid assisted shear exfoliation process, increase the porosity and inhibit the grain growth of Bi2O2Se. Accordingly, the electrical conductivity decreases first and then increases with the increase of the MoS2 content. Besides, the absolute Seebeck coefficient |S| of the composite sample rises first and then decreases with the increase of the MoS2 content due to the offset effect between |S| and σ. In addition, the enhanced phonon scattering combined with the increased porosity by MoS2 addition significantly inhibited the lattice thermal conductivity of Bi2O2Se. Finally, a ZTmax of 0.55 for 0.3 mol%MoS2/Bi2O2Se at 773 K was obtained.

AB - In this study, the effects of MoS2 addition on the thermoelectric properties of Bi2O2Se were investigated. The results show that the introduction of MoS2 can improve the efficiency of the liquid assisted shear exfoliation process, increase the porosity and inhibit the grain growth of Bi2O2Se. Accordingly, the electrical conductivity decreases first and then increases with the increase of the MoS2 content. Besides, the absolute Seebeck coefficient |S| of the composite sample rises first and then decreases with the increase of the MoS2 content due to the offset effect between |S| and σ. In addition, the enhanced phonon scattering combined with the increased porosity by MoS2 addition significantly inhibited the lattice thermal conductivity of Bi2O2Se. Finally, a ZTmax of 0.55 for 0.3 mol%MoS2/Bi2O2Se at 773 K was obtained.

KW - BiOSe

KW - MoS

KW - Shear exfoliation

KW - Thermoelectric

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U2 - 10.1016/j.solidstatesciences.2023.107147

DO - 10.1016/j.solidstatesciences.2023.107147

M3 - 文章

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SN - 1293-2558

VL - 138

JO - Solid State Sciences

JF - Solid State Sciences

M1 - 107147

ER -

Effects of MoS₂ addition on the thermoelectric properties of Bi₂O₂Se

Abstract

Keywords

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