Details
| Original language | English |
|---|---|
| Article number | e20326 |
| Journal | Journal of the American Ceramic Society |
| Volume | 108 |
| Issue number | 5 |
| Early online date | 7 Jan 2025 |
| Publication status | E-pub ahead of print - 7 Jan 2025 |
Abstract
An asymmetrically structured sodium cobaltite–calcium cobaltite ceramic composite with enhanced texture was synthesized using co-electrospinning of nanoribbons and rapid thermal processing (RTP). Long-term stability tests revealed that embedding the unstable sodium cobaltite in the chemically more stable calcium cobaltite effectively shields it from degradation at high temperatures in air. The composite has overall impressive thermoelectric properties. Measured at 1073 K, the composite showed an electrical conductivity of 183 S cm−1, a Seebeck coefficient of 233 µV K−1, and heat conductivity of 2.2 W m−1K−1. It features a high power factor of 9.9 µW cm−1K−2 and a figure-of-merit of 0.49, significantly surpassing the thermoelectric performance of sodium cobaltite–calcium cobaltite ceramic composites from previous studies.
Keywords
- calcium cobaltites, electrospinning, nanoribbons, sodium cobaltites, texturing, thermoelectric materials
ASJC Scopus subject areas
- Materials Science(all)
- Ceramics and Composites
- Materials Science(all)
- Materials Chemistry
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In: Journal of the American Ceramic Society, Vol. 108, No. 5, e20326, 05.2025.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Asymmetric structuring of ceramic composite via co-electrospun sodium cobaltite and calcium cobaltite nanoribbons
AU - Kruppa, Katharina
AU - Maor, Itzhak I.
AU - Steinbach, Frank
AU - Stobitzer, Dorothea
AU - Shter, Gennady E.
AU - Mann-Lahav, Meirav
AU - Grader, Gideon S.
AU - Feldhoff, Armin
N1 - Publisher Copyright: © 2025 The Author(s). Journal of the American Ceramic Society published by Wiley Periodicals LLC on behalf of American Ceramic Society.
PY - 2025/1/7
Y1 - 2025/1/7
N2 - An asymmetrically structured sodium cobaltite–calcium cobaltite ceramic composite with enhanced texture was synthesized using co-electrospinning of nanoribbons and rapid thermal processing (RTP). Long-term stability tests revealed that embedding the unstable sodium cobaltite in the chemically more stable calcium cobaltite effectively shields it from degradation at high temperatures in air. The composite has overall impressive thermoelectric properties. Measured at 1073 K, the composite showed an electrical conductivity of 183 S cm−1, a Seebeck coefficient of 233 µV K−1, and heat conductivity of 2.2 W m−1K−1. It features a high power factor of 9.9 µW cm−1K−2 and a figure-of-merit of 0.49, significantly surpassing the thermoelectric performance of sodium cobaltite–calcium cobaltite ceramic composites from previous studies.
AB - An asymmetrically structured sodium cobaltite–calcium cobaltite ceramic composite with enhanced texture was synthesized using co-electrospinning of nanoribbons and rapid thermal processing (RTP). Long-term stability tests revealed that embedding the unstable sodium cobaltite in the chemically more stable calcium cobaltite effectively shields it from degradation at high temperatures in air. The composite has overall impressive thermoelectric properties. Measured at 1073 K, the composite showed an electrical conductivity of 183 S cm−1, a Seebeck coefficient of 233 µV K−1, and heat conductivity of 2.2 W m−1K−1. It features a high power factor of 9.9 µW cm−1K−2 and a figure-of-merit of 0.49, significantly surpassing the thermoelectric performance of sodium cobaltite–calcium cobaltite ceramic composites from previous studies.
KW - calcium cobaltites
KW - electrospinning
KW - nanoribbons
KW - sodium cobaltites
KW - texturing
KW - thermoelectric materials
UR - http://www.scopus.com/inward/record.url?scp=85214704944&partnerID=8YFLogxK
U2 - 10.1111/jace.20326
DO - 10.1111/jace.20326
M3 - Article
AN - SCOPUS:85214704944
VL - 108
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 5
M1 - e20326
ER -