| Item type |
会議発表論文 / Conference Paper(1) |
| 公開日 |
2014-06-25 |
| タイトル |
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|
タイトル |
Synthesis and properties of Al-free Li7-xLa3Zr2-xTaxO12 garnet related oxides |
|
言語 |
en |
| 言語 |
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|
言語 |
eng |
| キーワード |
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|
主題 |
Li7La3Zr2O12 garnet |
| キーワード |
|
|
主題 |
cubic structure |
| キーワード |
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|
主題 |
Al-free |
| キーワード |
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|
主題 |
Ta substitution |
| キーワード |
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主題 |
ionic conductivity |
| 資源タイプ |
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資源タイプ |
conference paper |
| 著者 |
稲田, 亮史
日下部, 晃司
田中, 貴之
工藤, 翔太
櫻井, 庸司
|
| 著者(英） |
Inada, Ryoji
Kusakabe, Koji
Tanaka, Takayuki
Kudo, Shota
Sakurai, Yoji
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
We investigated the properties of Al-free garnet related Li7La3Zr2O12 (LLZ) and Li7-xLa3Zr2-xTaxO12 (LLZTa) with Ta content x = 0.25, 0.5 and 1.0 synthesized by a solid state reaction method. It was confirmed that all Al-free LLZTa have the cubic garnet related structure, while Al-free LLZ without Ta substitution has tetragonal one. No other secondary phases were observed in all sintered samples. This indicates that partial substitution of Zr4+ by Ta5+ with higher valence increases Li-ion vacancy concentration in a garnet framework and stabilizes cubic garnet structure. The LLZTa grains are in good contact with each other although a certain amount of pores in the boundary area can be observed. Total (bulk + grain boundary) Li-ion conductivity at 27°C for all Al-free LLZTa were well above 10-4 Scm-1, while Al-free LLZ showed much lower room temperature conductivity of 1 × 10-5 Scm-1. The highest room temperature conductivity of 6.1 × 10-4 Scm-1 was obtained in Al-free LLZTa with x = 0.5, which is approximately 30−40% lower than the value in LLZTa (x = 0.5) with Al inclusion as previously reported. |
| 書誌情報 |
Solid State Ionics (Special issue Solid State Ionics 19 Proceedings of the 19th International Conference on Solid State Ionics. (SSI-19))
巻 262,
p. 568-572,
発行日 2014-09
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| 出版者 |
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出版者 |
Elsevier |
| 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 |
10.1016/j.ssi.2013.09.008 |
| 権利 |
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権利情報 |
© 2014, Elsevier |
| 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 |
http://www.sciencedirect.com/science/article/pii/S0167273813004074 |
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関連名称 |
ScienceDirect |
| 著者版フラグ |
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出版タイプ |
AM |
ssi2014-0568 (1.5 MB)
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