Triboelectric Charge-Driven Enhancement of the Output Voltage of BiSbTe-Based Thermoelectric Generators

Sun Woo Kim; U. Jeong Yang; Jae Won Lee; Fredrick Kim; Yongchul Kim; Geunsik Lee; Jae Sung Son; Jeong Min Baik

doi:10.1021/acsenergylett.0c02483

Triboelectric Charge-Driven Enhancement of the Output Voltage of BiSbTe-Based Thermoelectric Generators

Sun Woo Kim, U. Jeong Yang, Jae Won Lee, Fredrick Kim, Yongchul Kim, Geunsik Lee, Jae Sung Son, Jeong Min Baik

Department of Advanced Materials Science and Engineering

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

21 Scopus citations

Abstract

A new approach to increasing the output voltage of a thermoelectric generator that does not involve material modification is demonstrated. The key component of the device is a dielectric layer and a metal layer with an air gap between them, attached at the cold side of a thermoelectric generator with a Cu/p-type BiSbTe/Au/Cr/SiO2/Si composition. When the two layers contact each other, negative charges are created on the dielectric surface, causing the electric potential difference across the two electrodes to increase, supported by density functional theory. An output voltage of ∼1.2 mV in a single BiSbTe TE leg is generated with an increase of 0.4 mV under a compressive force of 5 N. Finally, an active cooling system consisting of a small pinwheel is fabricated, and the output voltage is increased by the wind without a significant reduction in the wind speed through the pinwheel.

Original language	English
Pages (from-to)	1095-1103
Number of pages	9
Journal	ACS Energy Letters
Volume	6
Issue number	3
DOIs	https://doi.org/10.1021/acsenergylett.0c02483
State	Published - 12 Mar 2021

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title = "Triboelectric Charge-Driven Enhancement of the Output Voltage of BiSbTe-Based Thermoelectric Generators",

abstract = "A new approach to increasing the output voltage of a thermoelectric generator that does not involve material modification is demonstrated. The key component of the device is a dielectric layer and a metal layer with an air gap between them, attached at the cold side of a thermoelectric generator with a Cu/p-type BiSbTe/Au/Cr/SiO2/Si composition. When the two layers contact each other, negative charges are created on the dielectric surface, causing the electric potential difference across the two electrodes to increase, supported by density functional theory. An output voltage of ∼1.2 mV in a single BiSbTe TE leg is generated with an increase of 0.4 mV under a compressive force of 5 N. Finally, an active cooling system consisting of a small pinwheel is fabricated, and the output voltage is increased by the wind without a significant reduction in the wind speed through the pinwheel.",

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AU - Kim, Sun Woo

AU - Yang, U. Jeong

AU - Lee, Jae Won

AU - Kim, Fredrick

AU - Kim, Yongchul

AU - Lee, Geunsik

AU - Son, Jae Sung

AU - Baik, Jeong Min

PY - 2021/3/12

Y1 - 2021/3/12

N2 - A new approach to increasing the output voltage of a thermoelectric generator that does not involve material modification is demonstrated. The key component of the device is a dielectric layer and a metal layer with an air gap between them, attached at the cold side of a thermoelectric generator with a Cu/p-type BiSbTe/Au/Cr/SiO2/Si composition. When the two layers contact each other, negative charges are created on the dielectric surface, causing the electric potential difference across the two electrodes to increase, supported by density functional theory. An output voltage of ∼1.2 mV in a single BiSbTe TE leg is generated with an increase of 0.4 mV under a compressive force of 5 N. Finally, an active cooling system consisting of a small pinwheel is fabricated, and the output voltage is increased by the wind without a significant reduction in the wind speed through the pinwheel.

AB - A new approach to increasing the output voltage of a thermoelectric generator that does not involve material modification is demonstrated. The key component of the device is a dielectric layer and a metal layer with an air gap between them, attached at the cold side of a thermoelectric generator with a Cu/p-type BiSbTe/Au/Cr/SiO2/Si composition. When the two layers contact each other, negative charges are created on the dielectric surface, causing the electric potential difference across the two electrodes to increase, supported by density functional theory. An output voltage of ∼1.2 mV in a single BiSbTe TE leg is generated with an increase of 0.4 mV under a compressive force of 5 N. Finally, an active cooling system consisting of a small pinwheel is fabricated, and the output voltage is increased by the wind without a significant reduction in the wind speed through the pinwheel.

UR - https://www.scopus.com/pages/publications/85103387780

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JO - ACS Energy Letters

JF - ACS Energy Letters

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ER -

Triboelectric Charge-Driven Enhancement of the Output Voltage of BiSbTe-Based Thermoelectric Generators

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