| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2014-05-19 |
| タイトル |
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タイトル |
Synthesis and lithium-ion conductivity for perovskite-type Li3/8Sr7/16Ta3/4Zr1/4O3 solid electrolyte by powder-bed sintering |
| 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 |
稲田, 亮史
木村, 圭祐
日下部, 晃司
東城, 友都
櫻井, 庸司
Inada, Ryoji
Kimura, Keisuke
Kusakabe, Koji
Tojo, Tomohiro
Sakurai, Yoji
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
Perovskite-type compounds ABO3 in which A= La, Li and B = Ti (Li2/33xLaxTiO3, LLT) exhibit very high bulk ionic conductivity of 1.2 × 10-3 Scm-1 at 30°C, but LLT has very large grain-boundary resistance and is only stable above 1.61.8 V vs. Li/Li+ because Ti4+ can be easily reduced to Ti3+ below this potential. Li3/8Sr7/16Ta3/4Zr1/4O3
(LSTZ), in which A and B cations of SrZrO3 are partially substituted by Li and Ta, has been reported to be more stable against the lithiated negative electrode than LLT. In this paper, we synthesized LSTZ by using “powder-bed sintering” method, which is commonly used for preparation of dense garnet-structured lithium-ion conductor
Li7La3Zr2O12 (LLZ). At sintering process, the LSTZ pellet was covered with the same mother powder to suppress the excess Li loss during high temperature treatment and the formation of secondary phases. For LSTZ sintered with covering LSTZ mother powder, secondary phases such as SrTa2O6 and Sr2Ta2O7 were significantly reduced and LSTZ grains in the pellet were in good contact with each other. According to these improvement, the bulk and total (bulk + grain-boundary) ionic conductivity at 27°C of LSTZ attained to 3.5 × 10-4 Scm-1 and 2.7 × 10-4 Scm-1, respectively. The total conductivity at room temperature is approximately 3 times higher than that as
previously reported and comparable with LLT and LLZ. |
| 書誌情報 |
Solid State Ionics
巻 261,
p. 95-99,
発行日 2014-04
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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.2014.04.005 |
| 権利 |
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権利情報 |
Copyright © 2014 Elsevier B.V. All rights reserved |
| 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/S0167273814001672 |
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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 |
| キーワード |
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主題 |
Perovskite |
| キーワード |
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主題 |
Li3/8Sr7/16Ta3/4Zr1/4O3 |
| キーワード |
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主題 |
Solid electrolyte |
| キーワード |
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主題 |
Powder-bed sintering |
| キーワード |
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主題 |
Lithium ion conductivity |
s01672738-0261-95 (1.6 MB)
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