Superior Thermoelectric Performance of Textured Ca3Co4−xO9+δ Ceramic Nanoribbons

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Itzhak I. Maor
  • Katharina Kruppa
  • Adi Rozencweig
  • Amir Sterzer
  • Frank Steinbach
  • Vadim Beilin
  • Bernd Breidenstein
  • Gennady E. Shter
  • Meirav Mann-Lahav
  • Armin Feldhoff
  • Gideon S. Grader

Externe Organisationen

  • Technion-Israel Institute of Technology
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Aufsatznummer2304464
FachzeitschriftAdvanced functional materials
Jahrgang33
Ausgabenummer49
PublikationsstatusVeröffentlicht - 1 Dez. 2023

Abstract

Calcium cobaltite Ca3Co4−xO9+δ (CCO) is a promising p-type thermoelectric (TE) material for high-temperature applications in air. The grains of the material exhibit strong anisotropic properties, making texturing and nanostructuring mostly favored to improve thermoelectric performance. On the one hand multitude of interfaces are needed within the bulk material to create reflecting surfaces that can lower the thermal conductivity. On the other hand, low residual porosity is needed to improve the contact between grains and raise the electrical conductivity. In this study, CCO fibers with 100% flat cross sections in a stacked, compact form are electrospun. Then the grains within the nanoribbons in the plane of the fibers are grown. Finally, the nanoribbons are electrospun into a textured ceramic that features simultaneously a high electrical conductivity of 177 S cm−1 and an immensely enhanced Seebeck coefficient of 200 µV K−1 at 1073 K are assembled. The power factor of 4.68 µW cm−1 K−2 at 1073 K in air surpasses all previous CCO TE performances of nanofiber ceramics by a factor of two. Given the relatively high power factor combined with low thermal conductivity, a relatively large figure-of-merit of 0.3 at 873 K in the air for the textured nanoribbon ceramic is obtained.

ASJC Scopus Sachgebiete

Zitieren

Superior Thermoelectric Performance of Textured Ca3Co4−xO9+δ Ceramic Nanoribbons. / Maor, Itzhak I.; Kruppa, Katharina; Rozencweig, Adi et al.
in: Advanced functional materials, Jahrgang 33, Nr. 49, 2304464, 01.12.2023.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Maor, II, Kruppa, K, Rozencweig, A, Sterzer, A, Steinbach, F, Beilin, V, Breidenstein, B, Shter, GE, Mann-Lahav, M, Feldhoff, A & Grader, GS 2023, 'Superior Thermoelectric Performance of Textured Ca3Co4−xO9+δ Ceramic Nanoribbons', Advanced functional materials, Jg. 33, Nr. 49, 2304464. https://doi.org/10.1002/adfm.202304464
Maor, I. I., Kruppa, K., Rozencweig, A., Sterzer, A., Steinbach, F., Beilin, V., Breidenstein, B., Shter, G. E., Mann-Lahav, M., Feldhoff, A., & Grader, G. S. (2023). Superior Thermoelectric Performance of Textured Ca3Co4−xO9+δ Ceramic Nanoribbons. Advanced functional materials, 33(49), Artikel 2304464. https://doi.org/10.1002/adfm.202304464
Maor II, Kruppa K, Rozencweig A, Sterzer A, Steinbach F, Beilin V et al. Superior Thermoelectric Performance of Textured Ca3Co4−xO9+δ Ceramic Nanoribbons. Advanced functional materials. 2023 Dez 1;33(49):2304464. doi: 10.1002/adfm.202304464
Maor, Itzhak I. ; Kruppa, Katharina ; Rozencweig, Adi et al. / Superior Thermoelectric Performance of Textured Ca3Co4−xO9+δ Ceramic Nanoribbons. in: Advanced functional materials. 2023 ; Jahrgang 33, Nr. 49.
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title = "Superior Thermoelectric Performance of Textured Ca3Co4−xO9+δ Ceramic Nanoribbons",
abstract = "Calcium cobaltite Ca3Co4−xO9+δ (CCO) is a promising p-type thermoelectric (TE) material for high-temperature applications in air. The grains of the material exhibit strong anisotropic properties, making texturing and nanostructuring mostly favored to improve thermoelectric performance. On the one hand multitude of interfaces are needed within the bulk material to create reflecting surfaces that can lower the thermal conductivity. On the other hand, low residual porosity is needed to improve the contact between grains and raise the electrical conductivity. In this study, CCO fibers with 100% flat cross sections in a stacked, compact form are electrospun. Then the grains within the nanoribbons in the plane of the fibers are grown. Finally, the nanoribbons are electrospun into a textured ceramic that features simultaneously a high electrical conductivity of 177 S cm−1 and an immensely enhanced Seebeck coefficient of 200 µV K−1 at 1073 K are assembled. The power factor of 4.68 µW cm−1 K−2 at 1073 K in air surpasses all previous CCO TE performances of nanofiber ceramics by a factor of two. Given the relatively high power factor combined with low thermal conductivity, a relatively large figure-of-merit of 0.3 at 873 K in the air for the textured nanoribbon ceramic is obtained.",
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author = "Maor, {Itzhak I.} and Katharina Kruppa and Adi Rozencweig and Amir Sterzer and Frank Steinbach and Vadim Beilin and Bernd Breidenstein and Shter, {Gennady E.} and Meirav Mann-Lahav and Armin Feldhoff and Grader, {Gideon S.}",
note = "Funding Information: I.I.M. and K.K. contributed equally to this work. This work was financially supported by the Lower Saxony Ministry of Science and Culture in the frame of the Research Cooperation Lower Saxony‐Israel, project number 2029896. This work was supported by the Nancy & Stephan Grand Technion Energy Program (GTEP). G.S.G. acknowledges the support of the Arturo Gruenbaum Chair in Materials Engineering. This research was supported by the Israeli Ministry of Energy as part of the scholarship's program for first to third degree students in the fields of energy. The authors would like to thank Kobi Goffer and Ilya Margulis for their help with capturing the photos of electrospinning process during its operation.",
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Download

TY - JOUR

T1 - Superior Thermoelectric Performance of Textured Ca3Co4−xO9+δ Ceramic Nanoribbons

AU - Maor, Itzhak I.

AU - Kruppa, Katharina

AU - Rozencweig, Adi

AU - Sterzer, Amir

AU - Steinbach, Frank

AU - Beilin, Vadim

AU - Breidenstein, Bernd

AU - Shter, Gennady E.

AU - Mann-Lahav, Meirav

AU - Feldhoff, Armin

AU - Grader, Gideon S.

N1 - Funding Information: I.I.M. and K.K. contributed equally to this work. This work was financially supported by the Lower Saxony Ministry of Science and Culture in the frame of the Research Cooperation Lower Saxony‐Israel, project number 2029896. This work was supported by the Nancy & Stephan Grand Technion Energy Program (GTEP). G.S.G. acknowledges the support of the Arturo Gruenbaum Chair in Materials Engineering. This research was supported by the Israeli Ministry of Energy as part of the scholarship's program for first to third degree students in the fields of energy. The authors would like to thank Kobi Goffer and Ilya Margulis for their help with capturing the photos of electrospinning process during its operation.

PY - 2023/12/1

Y1 - 2023/12/1

N2 - Calcium cobaltite Ca3Co4−xO9+δ (CCO) is a promising p-type thermoelectric (TE) material for high-temperature applications in air. The grains of the material exhibit strong anisotropic properties, making texturing and nanostructuring mostly favored to improve thermoelectric performance. On the one hand multitude of interfaces are needed within the bulk material to create reflecting surfaces that can lower the thermal conductivity. On the other hand, low residual porosity is needed to improve the contact between grains and raise the electrical conductivity. In this study, CCO fibers with 100% flat cross sections in a stacked, compact form are electrospun. Then the grains within the nanoribbons in the plane of the fibers are grown. Finally, the nanoribbons are electrospun into a textured ceramic that features simultaneously a high electrical conductivity of 177 S cm−1 and an immensely enhanced Seebeck coefficient of 200 µV K−1 at 1073 K are assembled. The power factor of 4.68 µW cm−1 K−2 at 1073 K in air surpasses all previous CCO TE performances of nanofiber ceramics by a factor of two. Given the relatively high power factor combined with low thermal conductivity, a relatively large figure-of-merit of 0.3 at 873 K in the air for the textured nanoribbon ceramic is obtained.

AB - Calcium cobaltite Ca3Co4−xO9+δ (CCO) is a promising p-type thermoelectric (TE) material for high-temperature applications in air. The grains of the material exhibit strong anisotropic properties, making texturing and nanostructuring mostly favored to improve thermoelectric performance. On the one hand multitude of interfaces are needed within the bulk material to create reflecting surfaces that can lower the thermal conductivity. On the other hand, low residual porosity is needed to improve the contact between grains and raise the electrical conductivity. In this study, CCO fibers with 100% flat cross sections in a stacked, compact form are electrospun. Then the grains within the nanoribbons in the plane of the fibers are grown. Finally, the nanoribbons are electrospun into a textured ceramic that features simultaneously a high electrical conductivity of 177 S cm−1 and an immensely enhanced Seebeck coefficient of 200 µV K−1 at 1073 K are assembled. The power factor of 4.68 µW cm−1 K−2 at 1073 K in air surpasses all previous CCO TE performances of nanofiber ceramics by a factor of two. Given the relatively high power factor combined with low thermal conductivity, a relatively large figure-of-merit of 0.3 at 873 K in the air for the textured nanoribbon ceramic is obtained.

KW - electron microscopy

KW - electrospinning

KW - microstructure

KW - nanoribbons

KW - thermoelectric properties

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