このアイテムのアクセス数: 63
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
j.electacta.2021.139627.pdf | 2.21 MB | Adobe PDF | 見る/開く |
タイトル: | Charge-discharge properties and reaction mechanism of cation-disordered rutile-type Li₁.₂MnFe₁.₂F₆.₈ |
著者: | Zheng, Yayun Hwang, Jinkwang ![]() ![]() ![]() Matsumoto, Kazuhiko ![]() ![]() ![]() Hagiwara, Rika ![]() ![]() |
著者名の別形: | 鄭, 亞雲 黄, 珍光 松本, 一彦 萩原, 理加 |
キーワード: | Cation-disordered rutile structure Li⁺ extraction/insertion conversion reaction redox activities |
発行日: | Feb-2022 |
出版者: | Elsevier BV |
誌名: | Electrochimica Acta |
巻: | 405 |
論文番号: | 139627 |
抄録: | A carbon-coated Li₁.₂MnFe₁.₂F₆.₈ with a cation-disordered rutile structure is presented for the first time as a positive electrode material for lithium-ion batteries. For improved performance, the composite electrode is investigated at 90 °C using a thermally stable ionic liquid electrolyte. A combination of synchrotron X-ray diffraction, X-ray photoelectron spectroscopy and half-cell tests establish that the reversible extraction/insertion of lithium from/into Li₁.₂MnFe₁.₂F₆.₈ in the 2.5–4.5 V voltage range at 90 °C involves Fe(III)/Fe(II) and Mn(III)/Mn(II) redox reactions alongside partial conversion reactions between the rutile Li₁.₂MnFe₁.₂F₆.₈ and a mixture of LiF and rutile FeF₂. Deep discharge to 2.0 V involves a conversion reaction to LiF and metallic Fe and Mn accompanied by the partial preservation of the rutile structure. |
著作権等: | © 2021. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license. The full-text file will be made open to the public on 10 February 2024 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/268177 |
DOI(出版社版): | 10.1016/j.electacta.2021.139627 |
出現コレクション: | 学術雑誌掲載論文等 |

このアイテムは次のライセンスが設定されています: クリエイティブ・コモンズ・ライセンス