Thin-Film Thermoelectric Generators Comprising Molybdenum-Based MXenes pn Modules

Taeho Park; Kyoungah Cho; Sangsig Kim

doi:10.1002/admt.202100590

Thin-Film Thermoelectric Generators Comprising Molybdenum-Based MXenes pn Modules

Taeho Park, Kyoungah Cho, Sangsig Kim

School of Electrical Engineering

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

14 Citations (Scopus)

Abstract

In this study, the thermoelectric characteristics of spin-coated p-Mo₂C and n-Mo₂Ti₂C₃ thin films and the scalability of MXene thin-film thermoelectric generators (TFTEGs) constructed with pn modules are investigated. The in-plane thermal conductivities are measured at room temperature to be 0.37 and 0.45 W (m K)⁻¹ for the p-Mo₂C and n-Mo₂Ti₂C₃ thin films, respectively. The dimensionless figures of merit ZT are determined to be 1.7 × 10⁻⁵ and 2.6 × 10⁻⁴ for the p-Mo₂C and n-Mo₂Ti₂C₃ thin films, respectively. The scalability of the MXene TFTEG is evaluated by the Seebeck voltage being directly proportional to the number of pn modules. The MXene TFTEG constructed with 200-pn modules generates a Seebeck voltage of 399.9 mV and an output power of 6 mW cm⁻² at a ΔT of 5.4 K.

Original language	English
Article number	2100590
Journal	Advanced Materials Technologies
Volume	6
Issue number	11
DOIs	https://doi.org/10.1002/admt.202100590
Publication status	Published - 2021 Nov

Bibliographical note

Funding Information:
This work was supported in part by the Technology Development Program to Solve Climate Change (NRF‐2017M1A2A2087323), the Brain Korea 21 Plus Project in 2021 through the National Research Foundation of Korea funded by the Ministry of Science, and a Korean University Grant.

Publisher Copyright:
© 2021 Wiley-VCH GmbH

Keywords

2D materials
MXene thin films
pn modules
thermal conductivities
thin film thermoelectric generators

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Industrial and Manufacturing Engineering

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10.1002/admt.202100590

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title = "Thin-Film Thermoelectric Generators Comprising Molybdenum-Based MXenes pn Modules",

abstract = "In this study, the thermoelectric characteristics of spin-coated p-Mo2C and n-Mo2Ti2C3 thin films and the scalability of MXene thin-film thermoelectric generators (TFTEGs) constructed with pn modules are investigated. The in-plane thermal conductivities are measured at room temperature to be 0.37 and 0.45 W (m K)−1 for the p-Mo2C and n-Mo2Ti2C3 thin films, respectively. The dimensionless figures of merit ZT are determined to be 1.7 × 10−5 and 2.6 × 10−4 for the p-Mo2C and n-Mo2Ti2C3 thin films, respectively. The scalability of the MXene TFTEG is evaluated by the Seebeck voltage being directly proportional to the number of pn modules. The MXene TFTEG constructed with 200-pn modules generates a Seebeck voltage of 399.9 mV and an output power of 6 mW cm−2 at a ΔT of 5.4 K.",

keywords = "2D materials, MXene thin films, pn modules, thermal conductivities, thin film thermoelectric generators",

author = "Taeho Park and Kyoungah Cho and Sangsig Kim",

note = "Funding Information: This work was supported in part by the Technology Development Program to Solve Climate Change (NRF‐2017M1A2A2087323), the Brain Korea 21 Plus Project in 2021 through the National Research Foundation of Korea funded by the Ministry of Science, and a Korean University Grant. Publisher Copyright: {\textcopyright} 2021 Wiley-VCH GmbH",

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doi = "10.1002/admt.202100590",

language = "English",

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AU - Park, Taeho

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AU - Kim, Sangsig

N1 - Funding Information: This work was supported in part by the Technology Development Program to Solve Climate Change (NRF‐2017M1A2A2087323), the Brain Korea 21 Plus Project in 2021 through the National Research Foundation of Korea funded by the Ministry of Science, and a Korean University Grant. Publisher Copyright: © 2021 Wiley-VCH GmbH

PY - 2021/11

Y1 - 2021/11

N2 - In this study, the thermoelectric characteristics of spin-coated p-Mo2C and n-Mo2Ti2C3 thin films and the scalability of MXene thin-film thermoelectric generators (TFTEGs) constructed with pn modules are investigated. The in-plane thermal conductivities are measured at room temperature to be 0.37 and 0.45 W (m K)−1 for the p-Mo2C and n-Mo2Ti2C3 thin films, respectively. The dimensionless figures of merit ZT are determined to be 1.7 × 10−5 and 2.6 × 10−4 for the p-Mo2C and n-Mo2Ti2C3 thin films, respectively. The scalability of the MXene TFTEG is evaluated by the Seebeck voltage being directly proportional to the number of pn modules. The MXene TFTEG constructed with 200-pn modules generates a Seebeck voltage of 399.9 mV and an output power of 6 mW cm−2 at a ΔT of 5.4 K.

AB - In this study, the thermoelectric characteristics of spin-coated p-Mo2C and n-Mo2Ti2C3 thin films and the scalability of MXene thin-film thermoelectric generators (TFTEGs) constructed with pn modules are investigated. The in-plane thermal conductivities are measured at room temperature to be 0.37 and 0.45 W (m K)−1 for the p-Mo2C and n-Mo2Ti2C3 thin films, respectively. The dimensionless figures of merit ZT are determined to be 1.7 × 10−5 and 2.6 × 10−4 for the p-Mo2C and n-Mo2Ti2C3 thin films, respectively. The scalability of the MXene TFTEG is evaluated by the Seebeck voltage being directly proportional to the number of pn modules. The MXene TFTEG constructed with 200-pn modules generates a Seebeck voltage of 399.9 mV and an output power of 6 mW cm−2 at a ΔT of 5.4 K.

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KW - pn modules

KW - thermal conductivities

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Thin-Film Thermoelectric Generators Comprising Molybdenum-Based MXenes pn Modules

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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