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Oxides: Na2TiO3–NaMnO2 Binary System", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Nanosize Cation‐Disordered Rocksalt Oxides: Na2TiO3–NaMnO2 Binary System"}]}, "item_type_id": "2", "owner": "3", "path": ["496"], "permalink_uri": "http://hdl.handle.net/10131/00013284", "pubdate": {"attribute_name": "公開日", "attribute_value": "2020-06-09"}, "publish_date": "2020-06-09", "publish_status": "0", "recid": "10624", "relation": {}, "relation_version_is_last": true, "title": ["Nanosize Cation‐Disordered Rocksalt Oxides: Na2TiO3–NaMnO2 Binary System"], "weko_shared_id": 3}
Nanosize Cation‐Disordered Rocksalt Oxides: Na2TiO3–NaMnO2 Binary System
http://hdl.handle.net/10131/00013284
http://hdl.handle.net/10131/00013284f913216a-323b-473c-9aa7-4ec52aa7e29d
名前 / ファイル | ライセンス | アクション |
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Na2TiO3-NaMnO2 small manuscript revised v1.pdf (1.3 MB)
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Na2TiO3-NaMnO2 small figures revised v1 (1.2 MB)
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Na2TiO3-NaMnO2 small SI revised v1 (2.5 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-06-09 | |||||
タイトル | ||||||
タイトル | Nanosize Cation‐Disordered Rocksalt Oxides: Na2TiO3–NaMnO2 Binary System | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | anionic redox, manganese, nanosize, sodium batteries, sodium‐excess | |||||
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 |
Kobayashi, Tokio
× Kobayashi, Tokio× Zhao, Wenwen× Rajendra, Hongahally Basappa× Yamanaka, Keisuke× Ohta, Toshiaki× Yabuuchi, Naoaki |
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著者所属 | ||||||
Department of Chemistry and Life Science, Yokohama National University | ||||||
著者所属 | ||||||
Department of Applied Chemistry, Tokyo Denki University | ||||||
著者所属 | ||||||
Department of Chemistry and Life Science, Yokohama National University | ||||||
著者所属 | ||||||
SR Center, Ritsumeikan University | ||||||
著者所属 | ||||||
SR Center, Ritsumeikan University | ||||||
著者所属 | ||||||
Department of Chemistry and Life Science, Yokohama National University | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | To realize the development of rechargeable sodium batteries, new positive electrode materials without less abundant elements are explored. Enrichment of sodium contents in host structures is required to increase the theoretical capacity as electrode materials, and therefore Na‐excess compounds are systematically examined in a binary system of Na2TiO3–NaMnO2. After several trials, synthesis of Na‐excess compounds with a cation disordered rocksalt structure is successful by adapting a mechanical milling method. Among the tested electrode materials, Na1.14Mn0.57Ti0.29O2 in this binary system delivers a large reversible capacity of ≈200 mA h g−1, originating from reversible redox reactions of cationic Mn3+/Mn4+ and anionic O2−/On − redox confirmed by X‐ray absorption spectroscopy. Holes in oxygen 2p orbitals, which are formed by electrochemical oxidation, are energetically stabilized by electron donation from Mn ions. Moreover, reversibility of anionic redox is significantly improved compared with a former study on a binary system of Na3NbO3–NaMnO2 tested as model electrode materials. | |||||
書誌情報 |
Small 巻 16, 号 12, p. 1902462-1-1902462-6, 発行日 2019-09-04 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 16136829 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12812530 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1002/smll.201902462 | |||||
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 | Wiley | |||||
関係URI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1002/smll.201902462 | |||||
関連名称 | https://doi.org/10.1002/smll.201902462 |