Triple-phase ceramic 2D nanocomposite with enhanced thermoelectric properties

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Michael Bittner
  • Nikola Kanas
  • Richard Hinterding
  • Frank Steinbach
  • Dennis Groeneveld
  • Piotr Wemhoff
  • Kjell Wiik
  • Mari Ann Einarsrud
  • Armin Feldhoff

Externe Organisationen

  • Norwegian University of Science and Technology (NTNU)
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Details

OriginalspracheEnglisch
Seiten (von - bis)1237-1244
Seitenumfang8
FachzeitschriftJournal of the European Ceramic Society
Jahrgang39
Ausgabenummer4
Frühes Online-Datum3 Nov. 2018
PublikationsstatusVeröffentlicht - Apr. 2019

Abstract

A thermoelectric triple-phase p-type Ca3Co4O9-NaxCoO2-Bi2Ca2Co2O9 (CCO–NCO–BCCO) 2D nanocomposite was obtained from pressureless sintering in air. The anisotropic thermoelectric properties of the nanocomposite exhibit a high electrical conductivity of 116 S cm−1 and a power factor of 6.5 μW cm−1 K−2 perpendicular to the pressing direction at 1073 K in air. A corresponding zT value of 0.35 was obtained. Three co-doped, thermoelectrically active misfit-layered materials were stacked to form a triple-phase nanocomposite, which combines the advantages of all three materials. The resulting nanocomposite enables simultaneous increases of the isothermal electrical conductivity σ and the Seebeck coefficient α by charge carrier concentration engineering and synergistic effects. The Bi2Ca2Co2O9 and NaxCoO2 phases were stabilized in a Ca3Co4O9 matrix at high temperatures. To evaluate the application of the nanocomposite in high-temperature thermoelectric generators, the representation of the electrical conductivity and power factor in a Ioffe plot was more appropriate than the zT value.

ASJC Scopus Sachgebiete

Zitieren

Triple-phase ceramic 2D nanocomposite with enhanced thermoelectric properties. / Bittner, Michael; Kanas, Nikola; Hinterding, Richard et al.
in: Journal of the European Ceramic Society, Jahrgang 39, Nr. 4, 04.2019, S. 1237-1244.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Bittner, M, Kanas, N, Hinterding, R, Steinbach, F, Groeneveld, D, Wemhoff, P, Wiik, K, Einarsrud, MA & Feldhoff, A 2019, 'Triple-phase ceramic 2D nanocomposite with enhanced thermoelectric properties', Journal of the European Ceramic Society, Jg. 39, Nr. 4, S. 1237-1244. https://doi.org/10.1016/j.jeurceramsoc.2018.10.023
Bittner, M., Kanas, N., Hinterding, R., Steinbach, F., Groeneveld, D., Wemhoff, P., Wiik, K., Einarsrud, M. A., & Feldhoff, A. (2019). Triple-phase ceramic 2D nanocomposite with enhanced thermoelectric properties. Journal of the European Ceramic Society, 39(4), 1237-1244. https://doi.org/10.1016/j.jeurceramsoc.2018.10.023
Bittner M, Kanas N, Hinterding R, Steinbach F, Groeneveld D, Wemhoff P et al. Triple-phase ceramic 2D nanocomposite with enhanced thermoelectric properties. Journal of the European Ceramic Society. 2019 Apr;39(4):1237-1244. Epub 2018 Nov 3. doi: 10.1016/j.jeurceramsoc.2018.10.023
Bittner, Michael ; Kanas, Nikola ; Hinterding, Richard et al. / Triple-phase ceramic 2D nanocomposite with enhanced thermoelectric properties. in: Journal of the European Ceramic Society. 2019 ; Jahrgang 39, Nr. 4. S. 1237-1244.
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title = "Triple-phase ceramic 2D nanocomposite with enhanced thermoelectric properties",
abstract = "A thermoelectric triple-phase p-type Ca3Co4O9-NaxCoO2-Bi2Ca2Co2O9 (CCO–NCO–BCCO) 2D nanocomposite was obtained from pressureless sintering in air. The anisotropic thermoelectric properties of the nanocomposite exhibit a high electrical conductivity of 116 S cm−1 and a power factor of 6.5 μW cm−1 K−2 perpendicular to the pressing direction at 1073 K in air. A corresponding zT value of 0.35 was obtained. Three co-doped, thermoelectrically active misfit-layered materials were stacked to form a triple-phase nanocomposite, which combines the advantages of all three materials. The resulting nanocomposite enables simultaneous increases of the isothermal electrical conductivity σ and the Seebeck coefficient α by charge carrier concentration engineering and synergistic effects. The Bi2Ca2Co2O9 and NaxCoO2 phases were stabilized in a Ca3Co4O9 matrix at high temperatures. To evaluate the application of the nanocomposite in high-temperature thermoelectric generators, the representation of the electrical conductivity and power factor in a Ioffe plot was more appropriate than the zT value.",
keywords = "2D nanostructures, All-scale hierarchical architecture, CaCoO, Nanocomposite, Thermoelectricity",
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note = "Funding information: This work has been funded by the Deutsche Forschungsgesellschaft (DFG, German Research Foundation) – FE928/17-1. Financial support from The Research Council of Norway is appreciated under the program Nano2021 to the project (Number 228854) “Thermoelectric materials: Nanostructuring for improving the energy efficiency of thermoelectric generators and heat-pumps” (THELMA). Thanks are to the E.ON Stipendienfonds (T0087 – ESF) for financing the academic exchange between the Norwegian University for Science and Technology (NTNU) and the Gottfried Wilhelm Leibniz University Hannover. ",
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TY - JOUR

T1 - Triple-phase ceramic 2D nanocomposite with enhanced thermoelectric properties

AU - Bittner, Michael

AU - Kanas, Nikola

AU - Hinterding, Richard

AU - Steinbach, Frank

AU - Groeneveld, Dennis

AU - Wemhoff, Piotr

AU - Wiik, Kjell

AU - Einarsrud, Mari Ann

AU - Feldhoff, Armin

N1 - Funding information: This work has been funded by the Deutsche Forschungsgesellschaft (DFG, German Research Foundation) – FE928/17-1. Financial support from The Research Council of Norway is appreciated under the program Nano2021 to the project (Number 228854) “Thermoelectric materials: Nanostructuring for improving the energy efficiency of thermoelectric generators and heat-pumps” (THELMA). Thanks are to the E.ON Stipendienfonds (T0087 – ESF) for financing the academic exchange between the Norwegian University for Science and Technology (NTNU) and the Gottfried Wilhelm Leibniz University Hannover.

PY - 2019/4

Y1 - 2019/4

N2 - A thermoelectric triple-phase p-type Ca3Co4O9-NaxCoO2-Bi2Ca2Co2O9 (CCO–NCO–BCCO) 2D nanocomposite was obtained from pressureless sintering in air. The anisotropic thermoelectric properties of the nanocomposite exhibit a high electrical conductivity of 116 S cm−1 and a power factor of 6.5 μW cm−1 K−2 perpendicular to the pressing direction at 1073 K in air. A corresponding zT value of 0.35 was obtained. Three co-doped, thermoelectrically active misfit-layered materials were stacked to form a triple-phase nanocomposite, which combines the advantages of all three materials. The resulting nanocomposite enables simultaneous increases of the isothermal electrical conductivity σ and the Seebeck coefficient α by charge carrier concentration engineering and synergistic effects. The Bi2Ca2Co2O9 and NaxCoO2 phases were stabilized in a Ca3Co4O9 matrix at high temperatures. To evaluate the application of the nanocomposite in high-temperature thermoelectric generators, the representation of the electrical conductivity and power factor in a Ioffe plot was more appropriate than the zT value.

AB - A thermoelectric triple-phase p-type Ca3Co4O9-NaxCoO2-Bi2Ca2Co2O9 (CCO–NCO–BCCO) 2D nanocomposite was obtained from pressureless sintering in air. The anisotropic thermoelectric properties of the nanocomposite exhibit a high electrical conductivity of 116 S cm−1 and a power factor of 6.5 μW cm−1 K−2 perpendicular to the pressing direction at 1073 K in air. A corresponding zT value of 0.35 was obtained. Three co-doped, thermoelectrically active misfit-layered materials were stacked to form a triple-phase nanocomposite, which combines the advantages of all three materials. The resulting nanocomposite enables simultaneous increases of the isothermal electrical conductivity σ and the Seebeck coefficient α by charge carrier concentration engineering and synergistic effects. The Bi2Ca2Co2O9 and NaxCoO2 phases were stabilized in a Ca3Co4O9 matrix at high temperatures. To evaluate the application of the nanocomposite in high-temperature thermoelectric generators, the representation of the electrical conductivity and power factor in a Ioffe plot was more appropriate than the zT value.

KW - 2D nanostructures

KW - All-scale hierarchical architecture

KW - CaCoO

KW - Nanocomposite

KW - Thermoelectricity

UR - http://www.scopus.com/inward/record.url?scp=85056457922&partnerID=8YFLogxK

U2 - 10.1016/j.jeurceramsoc.2018.10.023

DO - 10.1016/j.jeurceramsoc.2018.10.023

M3 - Article

AN - SCOPUS:85056457922

VL - 39

SP - 1237

EP - 1244

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 4

ER -

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