| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2022-10-13 |
| タイトル |
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タイトル |
Effect of Ga2O3 Addition on the Properties of Garnet-Type Ta-doped Li7La3Zr2O12 Solid Electrolyte |
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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 |
| 著者 |
山崎, 佑輔
三宅, 翔太郎
秋元, 啓吾
稲田, 亮史
Yamazaki, Yusuke
Miyake, Shotaro
Akimoto, Keigo
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 |
Garnet-type Ta-doped Li7La3Zr2O12 (LLZO) ceramic solid electrolytes with Ga2O3 additive were synthesized using a conventional solid-state reaction process. When the amounts of Ga2O3 additive were below 2 mol %, the sintered sample has a dense structure composed of grains with an average size of 5 to 10 μm, whereas 3 mol % or more Ga2O3 addition causes a significant increase in grain size above several 10 to 100 μm, due to high-temperature sintering with a large amount of liquid Li-Ga-O phase. At room temperature, the highest total (bulk + grain-boundary) ionic conductivity of 1.1 mS cm−1 was obtained in the sample with 5 mol % Ga2O3 addition. However, this sample was shorted by Li dendrite growth into solid electrolyte at a current density below 0.2 mA cm−2 in galvanostatic testing of the symmetric cell with Li metal electrodes. The tolerance for Li dendrite growth is maximized in the sample sintered with 2 mol % Ga2O3 addition, which was shorted at 0.8 mA cm−2 in the symmetric cell. Since the interfacial resistance between Li metal and solid electrolyte was nearly identical among all samples, the difference in tolerance for Li dendrite growth is primarily attributed to the difference in microstructure of sintered samples depending on the amounts of Ga2O3. |
| bibliographic_information |
Batteries
en : Batteries
巻 8,
号 10,
p. 158,
発行日 2022-10-06
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| 出版者 |
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出版者 |
MDPI |
| item_10001_source_id_9 |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
2313-0105 |
| 権利 |
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権利情報 |
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons. org/licenses/by/4.0/). |
| 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://www.mdpi.com/2313-0105/8/10/158 |
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関連名称 |
MDPI Webサイト |
| 出版タイプ |
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出版タイプ |
VoR |
| キーワード |
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主題 |
garnet |
| キーワード |
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主題 |
Li dendrite growth |
| キーワード |
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主題 |
solid electrolyte |
| キーワード |
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主題 |
solid state battery |
| キーワード |
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主題 |
Ga2O3 addition |
| キーワード |
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主題 |
garnet |
| キーワード |
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主題 |
Li dendrite growth |
| キーワード |
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主題 |
solid electrolyte |
| キーワード |
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主題 |
solid state battery |
| キーワード |
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主題 |
Ga2O3 addition |
b23130105-0008-158 (3.3 MB)
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