Details
| Original language | English |
|---|---|
| Journal | Journal of the American Ceramic Society |
| Early online date | 23 Oct 2024 |
| Publication status | E-pub ahead of print - 23 Oct 2024 |
Abstract
High-performance polycrystalline calcium cobaltite ceramic was synthesized via electrospinning of nanoribbons, followed by dual-process compaction using spark plasma sintering and edge-free spark plasma texturing. The combination of nanoribbon electrospinning and this multistage sintering technique was employed for the first time and resulted in exceptionally well-textured thermoelectric ceramics. The textured ceramic had excellent thermoelectric properties. At 1073 K, the ceramic exhibited an electrical conductivity of 268 S cm−1, a Seebeck coefficient of 247 µV K−1 and a heat conductivity of 3.3 W m−1 K−1. In addition, the power factor and figure-of-merit reached enormously high values of 16.3 µW cm−1 K−2 and 0.53, respectively. This represents the highest thermoelectric performance reported to date not only for electrospun, polycrystalline calcium cobaltite fiber ceramics, but also for undoped polycrystalline calcium cobaltite ceramics.
Keywords
- calcium cobaltites, electrospinning, nanoribbons, spark plasma texturing, 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, 23.10.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - High-performance thermoelectric calcium cobaltite nanoribbon ceramic via electrospinning and dual spark plasma texturing
AU - Kruppa, Katharina
AU - Maor, Itzhak I.
AU - Karlin, Anat
AU - Steinbach, Frank
AU - Shter, Gennady E.
AU - Stobitzer, Dorothea
AU - Petersen, Hilke
AU - Breidenstein, Bernd
AU - Mann-Lahav, Meirav
AU - Grader, Gideon S.
AU - Feldhoff, Armin
N1 - Publisher Copyright: © 2024 The Author(s). Journal of the American Ceramic Society published by Wiley Periodicals LLC on behalf of American Ceramic Society.
PY - 2024/10/23
Y1 - 2024/10/23
N2 - High-performance polycrystalline calcium cobaltite ceramic was synthesized via electrospinning of nanoribbons, followed by dual-process compaction using spark plasma sintering and edge-free spark plasma texturing. The combination of nanoribbon electrospinning and this multistage sintering technique was employed for the first time and resulted in exceptionally well-textured thermoelectric ceramics. The textured ceramic had excellent thermoelectric properties. At 1073 K, the ceramic exhibited an electrical conductivity of 268 S cm−1, a Seebeck coefficient of 247 µV K−1 and a heat conductivity of 3.3 W m−1 K−1. In addition, the power factor and figure-of-merit reached enormously high values of 16.3 µW cm−1 K−2 and 0.53, respectively. This represents the highest thermoelectric performance reported to date not only for electrospun, polycrystalline calcium cobaltite fiber ceramics, but also for undoped polycrystalline calcium cobaltite ceramics.
AB - High-performance polycrystalline calcium cobaltite ceramic was synthesized via electrospinning of nanoribbons, followed by dual-process compaction using spark plasma sintering and edge-free spark plasma texturing. The combination of nanoribbon electrospinning and this multistage sintering technique was employed for the first time and resulted in exceptionally well-textured thermoelectric ceramics. The textured ceramic had excellent thermoelectric properties. At 1073 K, the ceramic exhibited an electrical conductivity of 268 S cm−1, a Seebeck coefficient of 247 µV K−1 and a heat conductivity of 3.3 W m−1 K−1. In addition, the power factor and figure-of-merit reached enormously high values of 16.3 µW cm−1 K−2 and 0.53, respectively. This represents the highest thermoelectric performance reported to date not only for electrospun, polycrystalline calcium cobaltite fiber ceramics, but also for undoped polycrystalline calcium cobaltite ceramics.
KW - calcium cobaltites
KW - electrospinning
KW - nanoribbons
KW - spark plasma texturing
KW - texturing
KW - thermoelectric materials
UR - http://www.scopus.com/inward/record.url?scp=85207297479&partnerID=8YFLogxK
U2 - 10.1111/jace.20198
DO - 10.1111/jace.20198
M3 - Article
AN - SCOPUS:85207297479
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
ER -