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Characterization of mixed titanium-niobium oxide Ti2Nb10O29 annealed in vacuum as anode material for lithium-ion battery
https://repo.lib.tut.ac.jp/records/1575
https://repo.lib.tut.ac.jp/records/1575db6afe32-e378-407f-baf7-9781d44521c3
名前 / ファイル | ライセンス | アクション |
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j03787753-0276-113 (5.8 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2014-12-10 | |||||
タイトル | ||||||
タイトル | Characterization of mixed titanium-niobium oxide Ti2Nb10O29 annealed in vacuum as anode material for lithium-ion battery | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
高島, 俊生
× 高島, 俊生× 東城, 友都× 稲田, 亮史× 櫻井, 庸司× Takashima, Toshiki× Tojo, Tomohiro× Inada, Ryoji× Sakurai, Yoji |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In this paper, the properties of mixed titanium-niobium oxide Ti2Nb10O29 (TNO) annealed in air and vacuum as anode material for lithium-ion battery were investigated. The color of TNO annealed in vacuum (V-TNO) is dark blue while white for TNO annealed in air (A-TNO). Moreover, lattice parameters for V-TNO were confirmed to be slightly larger than those for A-TNO. Introduction of oxygen defect in V-TNO was confirmed by thermogravimetric analysis. X-ray photoelectron spectroscopy analysis also indicated that Ti4+ in V-TNO are partially reduced into Ti3+, due to the introduction of oxygen defect in V-TNO. Electronic conductivity at room temperature for uni-axially pressed V-TNO powder is estimated to be around 10-610-5 S cm-1, which is more than three digits higher than that for pressed A-TNO powder (= 10-9 S cm-1). The enhancement of intrinsic electronic conductivity of TNO greatly contributes for improving the rate performance. At low current density of 0.5 mA cm-2, both A-TNO and V-TNO showed reversible capacity around 250 mAh g-1 at potential range from 1.0 to 2.5 V vs. Li/Li+, while at higher current density of 10 mA cm-2, V-TNO maintained much higher discharge capacity of 150 mAh g-1 than that for TNO (= 50 mAh g-1). |
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書誌情報 |
Journal of Power Sources 巻 276, p. 113-119, 発行日 2015-02 |
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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.jpowsour.2014.11.109 | |||||
権利 | ||||||
権利情報 | Copyright © 2014 Elsevier B.V. All rights reserved | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.sciencedirect.com/science/article/pii/S0378775314019661 | |||||
関連名称 | ScienceDirect | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Ti2Nb10O29 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Lithium-ion battery | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Anode material | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Oxygen defect | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Electronic conductivity |