| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2018-12-05 |
| タイトル |
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|
タイトル |
Characterization of vacuum‐annealed TiNb2O7 as high potential anode material for lithium‐ion battery |
|
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 |
稲田, 亮史
森, 友也
熊坂, 玲衣
伊藤, 龍太
東城, 友都
櫻井, 庸司
Inada, Ryoji
Mori, Tomoya
Kumasaka, Rei
Ito, Ryuta
Tojo, Tomohiro
Sakurai, Yoji
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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 |
Electrochemical properties of mixed titanium‐niobium oxide TiNb2O7 (TNO) synthesized via vacuum annealing as high potential anode material for lithium‐ion batteries were investigated. Crystal structure, size, and morphology are nearly independent of the annealing atmosphere for starting materials but the color of vacuum‐annealed TNO (TNO‐V) is dark blue while white for the air‐annealed one (TNO‐A). X‐ray photoelectron spectroscopy analysis also indicated that Ti4+ and Nb5+ in TNO are partially reduced into Ti3+ and Nb4+ due to the introduction of oxygen vacancy. Electronic conductivity for TNO‐V was around 10−3 S cm−1 at room temperature and much higher than that for TNO‐A (=10−11 S cm−1). In electrochemical testing, both TNO‐A and TNO‐V electrodes showed reversible capacity of 260‐270 mAh g−1 at low current density of 0.5 mA cm−2, while at higher current density of 5.0 mA cm−2, TNO‐V electrode retained higher reversible capacity of 140 mAh g−1 than that for TNO‐A electrode (=80 mAh g−1). The enhancement of intrinsic electronic conductivity greatly contributes to improve the rate performance of TNO. |
| 書誌情報 |
International Journal of Applied Ceramic Technology
en : International Journal of Applied Ceramic Technology
巻 16,
号 1,
p. 264-272,
発行日 2019-01
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| 出版者 |
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出版者 |
The American Ceramic Society |
| ISSN |
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収録物識別子タイプ |
EISSN |
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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 |
https://doi.org/10.1111/ijac.13058 |
| 権利 |
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権利情報 |
© 2018 The American Ceramic Society/ Subject to Restrictions below, author can archive post-print (Restrictions: 12months embargo for scientific, technical and medicine titles) |
| 関連サイト |
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|
識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1111/ijac.13058 |
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関連名称 |
Wiley Online Library |
| 他の資源との関係 |
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関連名称 |
We will archive the post-print (final draft post-refereeing) in January 2020. This is the accepted version of the following jounral : Int J Appl Ceram Technol. 2019;16:264–272., which has been published in final form at https://doi.org/10.1111/ijac.13058 |
| 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 |
TiNb2O7 |
| キーワード |
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主題 |
lithium-ion battery |
| キーワード |
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|
主題 |
anode material |
| キーワード |
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|
主題 |
oxygen vacancy |
| キーワード |
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|
主題 |
electronic conductivity |
| キーワード |
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|
主題 |
TiNb2O7 |
| キーワード |
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|
主題 |
lithium-ion battery |
| キーワード |
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|
主題 |
anode material |
| キーワード |
|
|
主題 |
oxygen vacancy |
| キーワード |
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|
主題 |
electronic conductivity |
i1744402-0016-264.pdf (3.2 MB)
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