Segmented Thermoelectric Oxide-Based Module for High-Temperature Waste Heat Harvesting

Le Thanh Hung; Ngo Van Nong; Li Han; Rasmus Bjørk; Pham Hoang Ngan; Tim C. Holgate; Benjamin Balke; G. Jeffrey Snyder; Søren Linderoth; Nini Pryds

doi:10.1002/ente.201500176

Segmented Thermoelectric Oxide-Based Module for High-Temperature Waste Heat Harvesting

Le Thanh Hung^*, Ngo Van Nong, Li Han, Rasmus Bjørk, Pham Hoang Ngan, Tim C. Holgate, Benjamin Balke, G. Jeffrey Snyder, Søren Linderoth, Nini Pryds

^*Corresponding author for this work

Materials Science and Engineering

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

28 Scopus citations

Abstract

We report a high-performance thermoelectric (TE) oxide-based module using the segmentation of half-Heusler Ti_0.3Zr_0.35Hf_0.35CoSb_0.8Sn_0.2 and misfit-layered cobaltite Ca₃Co₄O_9+δ as the p-leg and 2% Al-doped ZnO as the n-leg. The maximum output power of a 4-couple segmented module at ΔT=700K attains a value of approximately 6.5kWm^-2, which is threetimes higher than that of the best reported non-segmented oxide module. The TE properties of individual legs, as well as the interfacial contact resistances, were characterized as a function of temperature. Numerical modeling was used to predict the efficiency and to evaluate the influence of the electrical and thermal losses on the performance of TE modules. Initial long-term stability tests of the module at the hot and the cold side temperatures of 1073K and 444K, respectively, showed a promising result with 4% degradation for 48h operating in air.

Original language	English (US)
Pages (from-to)	1143-1151
Number of pages	9
Journal	Energy Technology
Volume	3
Issue number	11
DOIs	https://doi.org/10.1002/ente.201500176
State	Published - Nov 1 2015

Keywords

Complex oxides
Energy conversion
Half-Heusler compounds
Thermoelectrics
Waste energy harvesting

ASJC Scopus subject areas

Energy(all)

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10.1002/ente.201500176

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title = "Segmented Thermoelectric Oxide-Based Module for High-Temperature Waste Heat Harvesting",

abstract = "We report a high-performance thermoelectric (TE) oxide-based module using the segmentation of half-Heusler Ti0.3Zr0.35Hf0.35CoSb0.8Sn0.2 and misfit-layered cobaltite Ca3Co4O9+δ as the p-leg and 2% Al-doped ZnO as the n-leg. The maximum output power of a 4-couple segmented module at ΔT=700K attains a value of approximately 6.5kWm-2, which is threetimes higher than that of the best reported non-segmented oxide module. The TE properties of individual legs, as well as the interfacial contact resistances, were characterized as a function of temperature. Numerical modeling was used to predict the efficiency and to evaluate the influence of the electrical and thermal losses on the performance of TE modules. Initial long-term stability tests of the module at the hot and the cold side temperatures of 1073K and 444K, respectively, showed a promising result with 4% degradation for 48h operating in air.",

keywords = "Complex oxides, Energy conversion, Half-Heusler compounds, Thermoelectrics, Waste energy harvesting",

author = "Hung, {Le Thanh} and {Van Nong}, Ngo and Li Han and Rasmus Bj{\o}rk and Ngan, {Pham Hoang} and Holgate, {Tim C.} and Benjamin Balke and Snyder, {G. Jeffrey} and S{\o}ren Linderoth and Nini Pryds",

year = "2015",

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doi = "10.1002/ente.201500176",

language = "English (US)",

volume = "3",

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T1 - Segmented Thermoelectric Oxide-Based Module for High-Temperature Waste Heat Harvesting

AU - Hung, Le Thanh

AU - Van Nong, Ngo

AU - Han, Li

AU - Bjørk, Rasmus

AU - Ngan, Pham Hoang

AU - Holgate, Tim C.

AU - Balke, Benjamin

AU - Snyder, G. Jeffrey

AU - Linderoth, Søren

AU - Pryds, Nini

PY - 2015/11/1

Y1 - 2015/11/1

N2 - We report a high-performance thermoelectric (TE) oxide-based module using the segmentation of half-Heusler Ti0.3Zr0.35Hf0.35CoSb0.8Sn0.2 and misfit-layered cobaltite Ca3Co4O9+δ as the p-leg and 2% Al-doped ZnO as the n-leg. The maximum output power of a 4-couple segmented module at ΔT=700K attains a value of approximately 6.5kWm-2, which is threetimes higher than that of the best reported non-segmented oxide module. The TE properties of individual legs, as well as the interfacial contact resistances, were characterized as a function of temperature. Numerical modeling was used to predict the efficiency and to evaluate the influence of the electrical and thermal losses on the performance of TE modules. Initial long-term stability tests of the module at the hot and the cold side temperatures of 1073K and 444K, respectively, showed a promising result with 4% degradation for 48h operating in air.

AB - We report a high-performance thermoelectric (TE) oxide-based module using the segmentation of half-Heusler Ti0.3Zr0.35Hf0.35CoSb0.8Sn0.2 and misfit-layered cobaltite Ca3Co4O9+δ as the p-leg and 2% Al-doped ZnO as the n-leg. The maximum output power of a 4-couple segmented module at ΔT=700K attains a value of approximately 6.5kWm-2, which is threetimes higher than that of the best reported non-segmented oxide module. The TE properties of individual legs, as well as the interfacial contact resistances, were characterized as a function of temperature. Numerical modeling was used to predict the efficiency and to evaluate the influence of the electrical and thermal losses on the performance of TE modules. Initial long-term stability tests of the module at the hot and the cold side temperatures of 1073K and 444K, respectively, showed a promising result with 4% degradation for 48h operating in air.

KW - Complex oxides

KW - Energy conversion

KW - Half-Heusler compounds

KW - Thermoelectrics

KW - Waste energy harvesting

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Segmented Thermoelectric Oxide-Based Module for High-Temperature Waste Heat Harvesting

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