Asymmetric structuring of ceramic composite via co‐electrospun sodium cobaltite and calcium cobaltite nanoribbons.
Saved in:
| Title: | Asymmetric structuring of ceramic composite via co‐electrospun sodium cobaltite and calcium cobaltite nanoribbons. |
|---|---|
| Authors: | Kruppa, Katharina1 (AUTHOR), Maor, Itzhak I.2 (AUTHOR), Steinbach, Frank1 (AUTHOR), Stobitzer, Dorothea3 (AUTHOR), Shter, Gennady E.2 (AUTHOR), Mann‐Lahav, Meirav2 (AUTHOR), Grader, Gideon S.2,4 (AUTHOR) grader@technion.ac.il, Feldhoff, Armin1 (AUTHOR) armin.feldhoff@pci.uni-hannover.de |
| Source: | Journal of the American Ceramic Society. May2025, Vol. 108 Issue 5, p1-13. 13p. |
| Subjects: | Rapid thermal processing, Thermal conductivity, Thermoelectric materials, Materials texture, Electric conductivity, Seebeck coefficient |
| 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−1 K−1. It features a high power factor of 9.9 µW cm−1 K−2 and a figure‐of‐merit of 0.49, significantly surpassing the thermoelectric performance of sodium cobaltite–calcium cobaltite ceramic composites from previous studies. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of the American Ceramic Society is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| 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−1 K−1. It features a high power factor of 9.9 µW cm−1 K−2 and a figure‐of‐merit of 0.49, significantly surpassing the thermoelectric performance of sodium cobaltite–calcium cobaltite ceramic composites from previous studies. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 00027820 |
| DOI: | 10.1111/jace.20326 |
