Porous organic filler for high efficiency of flexible thermoelectric generator

Sung Jin Jung; Joonchul Shin; Sang Soon Lim; Beomjin Kwon; Seung Hyub Baek; Seong Keun Kim; Hyung Ho Park; Jin Sang Kim

doi:10.1016/j.nanoen.2020.105604

Porous organic filler for high efficiency of flexible thermoelectric generator

Sung Jin Jung, Joonchul Shin, Sang Soon Lim, Beomjin Kwon, Seung Hyub Baek, Seong Keun Kim, Hyung Ho Park, Jin Sang Kim

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

46 Scopus citations

Abstract

Flexible thermoelectric modules (TEMs) are often built with a polymer filler as structural support. However, the filler may serve as a thermal bypass, leading to reduced temperature difference across a TEM and degradation of the output. Herein, we present flexible TEMs made of porous PDMS fillers and Bi₂Te₃-based thermoelectric legs. The heat conduction through the filler is suppressed by leveraging the low thermal conductivity of porous PDMS (0.08 W/m∙K), leading to an increase in the temperature difference across the TEMs. The porous PDMS TEM exhibits 23% enhanced power density and a figure of merit (ZT) of 0.75 around the room temperature. Lastly, the efficacy of the porous PDMS TEM is demonstrated by testing the TEMs with body heat. Our approach would offer a promising insight into the flexible TEM designs.

Original language	English (US)
Article number	105604
Journal	Nano Energy
Volume	81
DOIs	https://doi.org/10.1016/j.nanoen.2020.105604
State	Published - Mar 2021

Keywords

BiTe
Filler thickness
Flexible thermoelectric module
Low thermal conductivity
Porous PDMS filler

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Materials Science(all)
Electrical and Electronic Engineering

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10.1016/j.nanoen.2020.105604

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title = "Porous organic filler for high efficiency of flexible thermoelectric generator",

abstract = "Flexible thermoelectric modules (TEMs) are often built with a polymer filler as structural support. However, the filler may serve as a thermal bypass, leading to reduced temperature difference across a TEM and degradation of the output. Herein, we present flexible TEMs made of porous PDMS fillers and Bi2Te3-based thermoelectric legs. The heat conduction through the filler is suppressed by leveraging the low thermal conductivity of porous PDMS (0.08 W/m∙K), leading to an increase in the temperature difference across the TEMs. The porous PDMS TEM exhibits 23% enhanced power density and a figure of merit (ZT) of 0.75 around the room temperature. Lastly, the efficacy of the porous PDMS TEM is demonstrated by testing the TEMs with body heat. Our approach would offer a promising insight into the flexible TEM designs.",

keywords = "BiTe, Filler thickness, Flexible thermoelectric module, Low thermal conductivity, Porous PDMS filler",

author = "Jung, {Sung Jin} and Joonchul Shin and Lim, {Sang Soon} and Beomjin Kwon and Baek, {Seung Hyub} and Kim, {Seong Keun} and Park, {Hyung Ho} and Kim, {Jin Sang}",

note = "Funding Information: This work was supported by R&D Convergence Program of NST ( National Research Council of Science and Technology No. CAP-14-01-KIST ) of Republic of Korea, and Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT ( NRF2020M3D1A111049911 ). Funding Information: This work was supported by R&D Convergence Program of NST (National Research Council of Science and Technology No. CAP-14-01-KIST) of Republic of Korea, and Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT (NRF2020M3D1A111049911). Publisher Copyright: {\textcopyright} 2020",

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doi = "10.1016/j.nanoen.2020.105604",

language = "English (US)",

volume = "81",

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AU - Jung, Sung Jin

AU - Shin, Joonchul

AU - Lim, Sang Soon

AU - Kwon, Beomjin

AU - Baek, Seung Hyub

AU - Kim, Seong Keun

AU - Park, Hyung Ho

AU - Kim, Jin Sang

N1 - Funding Information: This work was supported by R&D Convergence Program of NST ( National Research Council of Science and Technology No. CAP-14-01-KIST ) of Republic of Korea, and Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT ( NRF2020M3D1A111049911 ). Funding Information: This work was supported by R&D Convergence Program of NST (National Research Council of Science and Technology No. CAP-14-01-KIST) of Republic of Korea, and Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT (NRF2020M3D1A111049911). Publisher Copyright: © 2020

PY - 2021/3

Y1 - 2021/3

N2 - Flexible thermoelectric modules (TEMs) are often built with a polymer filler as structural support. However, the filler may serve as a thermal bypass, leading to reduced temperature difference across a TEM and degradation of the output. Herein, we present flexible TEMs made of porous PDMS fillers and Bi2Te3-based thermoelectric legs. The heat conduction through the filler is suppressed by leveraging the low thermal conductivity of porous PDMS (0.08 W/m∙K), leading to an increase in the temperature difference across the TEMs. The porous PDMS TEM exhibits 23% enhanced power density and a figure of merit (ZT) of 0.75 around the room temperature. Lastly, the efficacy of the porous PDMS TEM is demonstrated by testing the TEMs with body heat. Our approach would offer a promising insight into the flexible TEM designs.

AB - Flexible thermoelectric modules (TEMs) are often built with a polymer filler as structural support. However, the filler may serve as a thermal bypass, leading to reduced temperature difference across a TEM and degradation of the output. Herein, we present flexible TEMs made of porous PDMS fillers and Bi2Te3-based thermoelectric legs. The heat conduction through the filler is suppressed by leveraging the low thermal conductivity of porous PDMS (0.08 W/m∙K), leading to an increase in the temperature difference across the TEMs. The porous PDMS TEM exhibits 23% enhanced power density and a figure of merit (ZT) of 0.75 around the room temperature. Lastly, the efficacy of the porous PDMS TEM is demonstrated by testing the TEMs with body heat. Our approach would offer a promising insight into the flexible TEM designs.

KW - BiTe

KW - Filler thickness

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KW - Low thermal conductivity

KW - Porous PDMS filler

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Porous organic filler for high efficiency of flexible thermoelectric generator

Abstract

Keywords

ASJC Scopus subject areas

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