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

Mechanical and Aerospace Engineering

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

55 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
General Materials Science
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 = "Publisher Copyright: {\textcopyright} 2020",

year = "2021",

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

language = "English (US)",

volume = "81",

journal = "Nano Energy",

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T1 - Porous organic filler for high efficiency of flexible thermoelectric generator

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

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

KW - Flexible thermoelectric module

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

Access to Document

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