Improved Thermoelectric Performance in n-type Bi2(Te,Se)3 Alloys through the Incorporation of Fe Nanoparticles

Kyungmi Lee; Gwansik Kim; Sung Wook Ye; Jeongmin Kim; Jong Wook Roh; Wooyoung Lee; Kyung Mi Lee

doi:10.1021/acsaem.4c01778

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Improved Thermoelectric Performance in n-type Bi2(Te,Se)3 Alloys through the Incorporation of Fe Nanoparticles

Journal article

Peer reviewed

Improved Thermoelectric Performance in n-type Bi2(Te,Se)3 Alloys through the Incorporation of Fe Nanoparticles

Kyungmi Lee, Gwansik Kim, Sung Wook Ye, Jeongmin Kim, Jong Wook Roh, Wooyoung Lee and Kyung Mi Lee

ACS applied energy materials, Vol.7(20), pp.9300-9306

10/28/2024

DOI: 10.1021/acsaem.4c01778

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Abstract

Herein, we investigated the thermoelectric properties of Fe-BTS (Bi2Te3-based compound) samples fabricated through nanometal decoration and spark plasma sintering. We examined the effects of Fe nanoparticle (NP) addition on the power factor (PF), thermal conductivity (kappa), and figure of merit (ZT) of the samples. The incorporation of Fe NPs led to a significant increase in the PF of the Fe-BTS samples, surpassing the performance of the pristine sample by over 34%. This improvement is attributed to the combined effects of carrier concentration tuning and low-energy carrier filtering. Additionally, the thermal conductivity of the Fe-BTS samples was significantly reduced due to enhanced phonon scattering at the increased interfaces. Consequently, a maximum ZT value of 1.09 was achieved at 363 K for the Fe-BTS sample with an Fe content of 0.3 vol %. These findings highlight the crucial role of interface engineering in enhancing the thermoelectric properties of materials.

Chemistry

Chemistry, Physical

Energy & Fuels

Materials Science

Materials Science, Multidisciplinary

Physical Sciences

Science & Technology

Technology

Details

Title: Subtitle: Improved Thermoelectric Performance in n-type Bi2(Te,Se)3 Alloys through the Incorporation of Fe Nanoparticles
Creators: Kyungmi Lee - Yonsei University
Gwansik Kim - Hyundai Motor Group (South Korea)
Sung Wook Ye - Kyungpook National University
Jeongmin Kim - Daegu Gyeongbuk Institute of Science and Technology
Jong Wook Roh - Kyungpook National University
Wooyoung Lee - Yonsei University
Kyung Mi Lee - Nursing
Resource Type: Journal article
Publication Details: ACS applied energy materials, Vol.7(20), pp.9300-9306
DOI: 10.1021/acsaem.4c01778
ISSN: 2574-0962
eISSN: 2574-0962
Publisher: Amer Chemical Soc
Number of pages: 7
Grant note: NRF-2021R1A5A8033165; NRF-2022R1A2C1007220 / National Research Foundation of Korea NRF2019R1A6A1A11055660 / Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education; National Research Foundation of Korea; Ministry of Education (MOE), Republic of Korea 20013621 / Technology Innovation Program - Ministry of Trade, Industry & Energy (MOTIE, Korea); Ministry of Trade, Industry & Energy (MOTIE), Republic of Korea
Language: English
Date published: 10/28/2024
Academic Unit: Nursing
Record Identifier: 9985219302502771

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