Synthesis of Bi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub> Sintered Composite with Dispersed Ionic Liquid and Investigation of their Thermoelectric Properties
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- KATSUYAMA Shigeru
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
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- KUSAFUKA Yusuke
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University DAIDO STEEL Co., Ltd.
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- TANAKA Toshihiro
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
Bibliographic Information
- Other Title
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- イオン液体を分散させたBi<sub>0.5</sub>Sb<sub>1.5</sub>Te<sub>3</sub>複合焼結体の作製とその熱電特性の評価
- イオン液体を分散させたBi₀.₅Sb₁.₅Te₃複合焼結体の作製とその熱電特性の評価
- イオン エキタイ オ ブンサン サセタ Bi ₀.₅ Sb ₁.₅ Te ₃ フクゴウ ショウケツタイ ノ サクセイ ト ソノ ネツデントクセイ ノ ヒョウカ
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Abstract
<p>The sintered composite of Bi0.5Sb1.5Te3 and ionic liquid, BMImTFSI, was synthesized by sintering the mixture of Bi0.5Sb1.5Te3 powder and BMImTFSI at 573 K by hot pressing, and its microscopic structure and thermoelectric properties were investigated. The dispersed micropores, where BMImTFSI occupied, were observed by SEM observation on the cross-section of Bi0.5Sb1.5Te3-BMImTFSI sintered composite. With an increase of the amount of BMImTFSI, the Seebeck coefficient of the composite generally decreased, while the electrical resistivity increased and the electrical resistivity of the composite with 0.5 ml of BMImTFSI is about two times larger than that of Bi0.5Sb1.5Te3 with no BMImTFSI. The thermal conductivity of the composite with 0.01 ml of BMImTFSI was reduced by about 20 % compared to that of Bi0.5Sb1.5Te3 with no BMImTFSI. These results indicate that the dispersed BMImTFSI in the composite acts as a scattering center for electric carrier and phonon. As a result, the dimensionless figure of merit ZT of the composite with 0.01 ml of BMImTFSI showed a maximum value of 0.70 at 373 K, which was about 20 % larger than that of Bi0.5Sb1.5Te3 with no BMImTFSI.</p>
Journal
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- Journal of the Japan Society of Powder and Powder Metallurgy
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Journal of the Japan Society of Powder and Powder Metallurgy 63 (8), 719-724, 2016
Japan Society of Powder and Powder Metallurgy
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Details 詳細情報について
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- CRID
- 1390001206310491264
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- NII Article ID
- 130005253112
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- NII Book ID
- AN00222724
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- ISSN
- 18809014
- 05328799
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- NDL BIB ID
- 027541171
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed