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Metastable and nanosize cation-disordered rocksalt-type oxides: revisit of stoichiometric LiMnO2 and NaMnO2
http://hdl.handle.net/10131/00012632
http://hdl.handle.net/10131/0001263202b42867-403b-408b-858c-a31f70ba9b26
名前 / ファイル | ライセンス | アクション |
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2018 JMCA LiMnO2 NaMnO2.pdf (5.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-06-13 | |||||
タイトル | ||||||
タイトル | Metastable and nanosize cation-disordered rocksalt-type oxides: revisit of stoichiometric LiMnO2 and NaMnO2 | |||||
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 |
Sato, Takahito
× Sato, Takahito× Sato, Kei× Zhao, Wenwen× Kajiya, Yoshio× Yabuuchi, Naoaki |
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著者所属 | ||||||
Department of Applied Chemistry, Tokyo Denki University | ||||||
著者所属 | ||||||
Department of Applied Chemistry, Tokyo Denki University | ||||||
著者所属 | ||||||
Department of Applied Chemistry, Tokyo Denki University / Elements Strategy Initiative for Catalysts and Batteries, Kyoto University | ||||||
著者所属 | ||||||
Technology Department, Electronic Materials Group, JX Nippon Mining & Metals Corporation | ||||||
著者所属 | ||||||
Department of Applied Chemistry, Tokyo Denki University / Elements Strategy Initiative for Catalysts and Batteries, Kyoto University / Department of Chemistry and Life Science, Yokohama National University | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Stoichiometric LiMnO2 and NaMnO2 with a cation-disordered rocksalt-type structure as metastable polymorphs were successfully prepared by mechanical milling. Although cation-disordered rocksalt phases with a stoichiometric composition (Li : Mn molar ratio = 1 : 1) are expected to be electrochemically less active, both samples show superior performance as electrode materials when compared with thermodynamically stable layered phases in Li/Na cells. Both metastable samples deliver large reversible capacities, which correspond to >80% of their theoretical capacities, with relatively small polarization on the basis of reversible Mn3+/Mn4+ redox. Moreover, for rocksalt LiMnO2, the phase transition into a spinel phase is effectively suppressed compared with a thermodynamically stable phase. The electrode reversibility of NaMnO2 is also drastically improved by the use of the metastable phase with good capacity retention. Metastable phases with unique nanostructures open a new path for the design of advanced electrode materials with high energy density, and thus a broad impact is anticipated for rechargeable Li/Na battery applications. | |||||
書誌情報 |
Journal of Materials Chemistry A 巻 28, p. 13943-13951, 発行日 2018-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 20507488 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12603290 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1039/C8TA03667E | |||||
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 | |||||
出版者 | ||||||
出版者 | Royal Society of Chemistry |