| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2023-12-15 |
| タイトル |
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タイトル |
Characterization of Na2Zn2TeO6 ceramic solid electrolyte densified by hot pressing |
|
言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ |
journal article |
| アクセス権 |
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|
アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
板谷, 明浩
小野, 湧貴
山本, 一輝
稲田, 亮史
Itaya, Akihiro
Ono, Yuki
Yamamo, Kazuki
Inada, Ryoji
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
In this work, we applied hot pressing (HP) for the densification of Na 2 Zn 2 TeO 6 NZTO at lower temperature than conventional furnace sintering (FS). Calcined NZTO powder w as densified by HP at 700 ºC for 1 hour under uniaxial pressure of 20 and 60 MPa using a graphite mold . By increasing the uni axial pressure to 60 MPa for HP, high relative density above 90 % was obtained. As prepared NZTO by HP showed total (bulk + grain boundary) ionic conductivity of 0.29 mS cm -1 at room temperature, which is lower than NZTO prepare d by FS at 800 ºC (= 0.4 mS cm -1 ) with lower relative density 85 %). It was found that the contribution of grain boundary resistance in as prepared NZTO by HP is larger than NZTO by FS. We confirmed that the grain boundary resistance was significantly reduced by post annealing. Consequently, total conductivity at room temperature was improved to 0.42 mS cm -1 and 0.56 mS cm -1 by annealed at 700 ºC and 800 ºC for 2 hours . X ray photoelectron spectroscopy analysis indicated the 2 residual carbon residual carbon--contained secondary phases were reduced by postcontained secondary phases were reduced by post--annealing. These annealing. These secondary phases could be formed by the carbon contamination from secondary phases could be formed by the carbon contamination from a a graphite graphite moldmold for for HP and their removal by postHP and their removal by post--annealing results into the improvement ionic conduction at annealing results into the improvement ionic conduction at graingrain--boundary.boundary. |
| 書誌情報 |
en : International Journal of Applied Ceramic Technology
巻 21,
号 1,
p. 311-318,
発行日 2023-08-10
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| 出版者 |
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出版者 |
Wiley |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1744-7402 |
| DOI |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
10.1111/ijac.14508 |
| 権利 |
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権利情報 |
This is the peer reviewed version of the following article: Characterization of Na2Zn2TeO6 ceramic solid electrolyte densified by hot pressing, which has been published in final form at https://doi.org/10.1111/ijac.14508. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited. |
| 関連サイト |
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識別子タイプ |
URI |
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|
関連識別子 |
https://ceramics.onlinelibrary.wiley.com/doi/10.1111/ijac.14508 |
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|
関連名称 |
The American Ceramic Society サイト |
| 出版タイプ |
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出版タイプ |
AM |
| キーワード |
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主題 |
solid electrolyte |
| キーワード |
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|
主題 |
layered oxide, |
| キーワード |
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主題 |
sodium ion conductivity, |
| キーワード |
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主題 |
hot pressing |
i17447402-0021-311.pdf (980 KB)
