Composition-segmented BiSbTe thermoelectric generator fabricated by multimaterial 3D printing

Seong Eun Yang; Fredrick Kim; Faizan Ejaz; Gi Seung Lee; Hyejin Ju; Seungjun Choo; Jungsoo Lee; Gyeonghun Kim; Soo ho Jung; Sangjoon Ahn; Han Gi Chae; Kyung Tae Kim; Beomjin Kwon; Jae Sung Son

doi:10.1016/j.nanoen.2020.105638

Composition-segmented BiSbTe thermoelectric generator fabricated by multimaterial 3D printing

Seong Eun Yang, Fredrick Kim, Faizan Ejaz, Gi Seung Lee, Hyejin Ju, Seungjun Choo, Jungsoo Lee, Gyeonghun Kim, Soo ho Jung, Sangjoon Ahn, Han Gi Chae, Kyung Tae Kim, Beomjin Kwon, Jae Sung Son

Mechanical and Aerospace Engineering

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

42 Scopus citations

Abstract

Segmented thermoelectric generators (TEGs) comprising multiple TE elements can operate over a large thermal gradient without inherent conversion efficiency (ZT) losses of materials. However, despite excellent theoretical efficiencies, the performance of actual segmented TEGs are critically affected by several challenges related to material incompatibility and limited design flexibility in conventional fabrication processes. Herein, we report the multi-material 3D printing of composition-segmented BiSbTe materials by the sequential deposition of all-inorganic viscoelastic TE inks containing Bi_xSb₂_-xTe₃ particles, tailored with Sb₂Te₄²⁻ chalcogenidometallate binders. The peak ZTs of the 3D-printed materials controllably shifted from room temperature to 250 °C by composition engineering of Bi_xSb₂_-xTe₃ particles. We fabricated the optimally designed TEG comprising the 3D-printed, composition-segmented tri-block Bi_0.55Sb_1.45Te₃/Bi_0.5Sb_1.5Te₃/Bi_0.35Sb_1.65Te₃ TE leg, which extends the peak ZTs and satisfies full compatibility across the entire temperature range, realizing a record-high efficiency of 8.7% under the temperature difference of 236 °C. Our approach offers a promising strategy to optimize segmented TEGs.

Original language	English (US)
Article number	105638
Journal	Nano Energy
Volume	81
DOIs	https://doi.org/10.1016/j.nanoen.2020.105638
State	Published - Mar 2021

Keywords

3D printing
BiSbTe
Power generator
Segmented module
Thermoelectric materials

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science
Electrical and Electronic Engineering

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10.1016/j.nanoen.2020.105638

Cite this

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title = "Composition-segmented BiSbTe thermoelectric generator fabricated by multimaterial 3D printing",

abstract = "Segmented thermoelectric generators (TEGs) comprising multiple TE elements can operate over a large thermal gradient without inherent conversion efficiency (ZT) losses of materials. However, despite excellent theoretical efficiencies, the performance of actual segmented TEGs are critically affected by several challenges related to material incompatibility and limited design flexibility in conventional fabrication processes. Herein, we report the multi-material 3D printing of composition-segmented BiSbTe materials by the sequential deposition of all-inorganic viscoelastic TE inks containing BixSb2-xTe3 particles, tailored with Sb2Te42− chalcogenidometallate binders. The peak ZTs of the 3D-printed materials controllably shifted from room temperature to 250 °C by composition engineering of BixSb2-xTe3 particles. We fabricated the optimally designed TEG comprising the 3D-printed, composition-segmented tri-block Bi0.55Sb1.45Te3/Bi0.5Sb1.5Te3/Bi0.35Sb1.65Te3 TE leg, which extends the peak ZTs and satisfies full compatibility across the entire temperature range, realizing a record-high efficiency of 8.7% under the temperature difference of 236 °C. Our approach offers a promising strategy to optimize segmented TEGs.",

keywords = "3D printing, BiSbTe, Power generator, Segmented module, Thermoelectric materials",

author = "Yang, {Seong Eun} and Fredrick Kim and Faizan Ejaz and Lee, {Gi Seung} and Hyejin Ju and Seungjun Choo and Jungsoo Lee and Gyeonghun Kim and Jung, {Soo ho} and Sangjoon Ahn and Chae, {Han Gi} and Kim, {Kyung Tae} and Beomjin Kwon and Son, {Jae Sung}",

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doi = "10.1016/j.nanoen.2020.105638",

language = "English (US)",

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T1 - Composition-segmented BiSbTe thermoelectric generator fabricated by multimaterial 3D printing

AU - Yang, Seong Eun

AU - Kim, Fredrick

AU - Ejaz, Faizan

AU - Lee, Gi Seung

AU - Ju, Hyejin

AU - Choo, Seungjun

AU - Lee, Jungsoo

AU - Kim, Gyeonghun

AU - Jung, Soo ho

AU - Ahn, Sangjoon

AU - Chae, Han Gi

AU - Kim, Kyung Tae

AU - Kwon, Beomjin

AU - Son, Jae Sung

PY - 2021/3

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N2 - Segmented thermoelectric generators (TEGs) comprising multiple TE elements can operate over a large thermal gradient without inherent conversion efficiency (ZT) losses of materials. However, despite excellent theoretical efficiencies, the performance of actual segmented TEGs are critically affected by several challenges related to material incompatibility and limited design flexibility in conventional fabrication processes. Herein, we report the multi-material 3D printing of composition-segmented BiSbTe materials by the sequential deposition of all-inorganic viscoelastic TE inks containing BixSb2-xTe3 particles, tailored with Sb2Te42− chalcogenidometallate binders. The peak ZTs of the 3D-printed materials controllably shifted from room temperature to 250 °C by composition engineering of BixSb2-xTe3 particles. We fabricated the optimally designed TEG comprising the 3D-printed, composition-segmented tri-block Bi0.55Sb1.45Te3/Bi0.5Sb1.5Te3/Bi0.35Sb1.65Te3 TE leg, which extends the peak ZTs and satisfies full compatibility across the entire temperature range, realizing a record-high efficiency of 8.7% under the temperature difference of 236 °C. Our approach offers a promising strategy to optimize segmented TEGs.

AB - Segmented thermoelectric generators (TEGs) comprising multiple TE elements can operate over a large thermal gradient without inherent conversion efficiency (ZT) losses of materials. However, despite excellent theoretical efficiencies, the performance of actual segmented TEGs are critically affected by several challenges related to material incompatibility and limited design flexibility in conventional fabrication processes. Herein, we report the multi-material 3D printing of composition-segmented BiSbTe materials by the sequential deposition of all-inorganic viscoelastic TE inks containing BixSb2-xTe3 particles, tailored with Sb2Te42− chalcogenidometallate binders. The peak ZTs of the 3D-printed materials controllably shifted from room temperature to 250 °C by composition engineering of BixSb2-xTe3 particles. We fabricated the optimally designed TEG comprising the 3D-printed, composition-segmented tri-block Bi0.55Sb1.45Te3/Bi0.5Sb1.5Te3/Bi0.35Sb1.65Te3 TE leg, which extends the peak ZTs and satisfies full compatibility across the entire temperature range, realizing a record-high efficiency of 8.7% under the temperature difference of 236 °C. Our approach offers a promising strategy to optimize segmented TEGs.

KW - 3D printing

KW - BiSbTe

KW - Power generator

KW - Segmented module

KW - Thermoelectric materials

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Composition-segmented BiSbTe thermoelectric generator fabricated by multimaterial 3D printing

Abstract

Keywords

ASJC Scopus subject areas

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