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Synthesis and properties of Al-free Li7-xLa3Zr2-xTaxO12 garnet related oxides
https://repo.lib.tut.ac.jp/records/1351
https://repo.lib.tut.ac.jp/records/13517243f7f4-66dc-497e-8c20-b47ec0bd4a42
名前 / ファイル | ライセンス | アクション |
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Item type | 会議発表論文 / Conference Paper(1) | |||||
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公開日 | 2014-06-25 | |||||
タイトル | ||||||
タイトル | Synthesis and properties of Al-free Li7-xLa3Zr2-xTaxO12 garnet related oxides | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Li7La3Zr2O12 garnet | |||||
キーワード | ||||||
主題 | cubic structure | |||||
キーワード | ||||||
主題 | Al-free | |||||
キーワード | ||||||
主題 | Ta substitution | |||||
キーワード | ||||||
主題 | ionic conductivity | |||||
資源タイプ | ||||||
資源タイプ | conference paper | |||||
著者 |
稲田, 亮史
× 稲田, 亮史× 日下部, 晃司× 田中, 貴之× 工藤, 翔太× 櫻井, 庸司 |
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著者(英) |
Inada, Ryoji
× Inada, Ryoji× Kusakabe, Koji× Tanaka, Takayuki× Kudo, Shota× Sakurai, Yoji |
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抄録 | ||||||
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 | ||||||
出版者 | Elsevier | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.ssi.2013.09.008 | |||||
権利 | ||||||
権利情報 | © 2014, Elsevier | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.sciencedirect.com/science/article/pii/S0167273813004074 | |||||
関連名称 | ScienceDirect | |||||
著者版フラグ | ||||||
出版タイプ | AM |