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Lithium‐ion battery anode of mesocrystalline CoTiO₃/TiO₂ nanocomposite with extremely enhanced capacity
https://kagawa-u.repo.nii.ac.jp/records/9712
https://kagawa-u.repo.nii.ac.jp/records/9712aa8116f4-7e33-4603-be32-a9ab8c1c72a8
| 名前 / ファイル | ライセンス | アクション |
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AA12724987_014_L124.pdf (436.2 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||||||
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| 公開日 | 2022-06-10 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | Lithium‐ion battery anode of mesocrystalline CoTiO₃/TiO₂ nanocomposite with extremely enhanced capacity | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 見出し | ||||||||||||||||||
| 大見出し | Abstracts | |||||||||||||||||
| 小見出し | Workshop 3 : Innovative technologies for new industry creation | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 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 | departmental bulletin paper | |||||||||||||||||
| アクセス権 | ||||||||||||||||||
| アクセス権 | open access | |||||||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||||||
| 著者 |
王, 興
× 王, 興
× 馮, 旗
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||
| 内容記述 | Mesocrystalline materials consisting of nanocrystal subunit alignment with the same crystallographic orientation, have a potential application to active materials for lithium‐ion battery (LIB) electrodes. In this study, a topochemical process was developed to the synthesis of mesocrystalline CoTiO3/TiO2 nanocomposites using a layered titanate H1.07Ti1.73O4 (HTO) as the precursor. The introduction of H2O2 into the interlayer space of HTO leads to access of Co2+ intercalation into the interlayer space by ion‐exchange reaction and the formation of a sandwich layered structure by stacking HTO layer and Co(OH)2‐x x+ layer. This sandwich layered structure was topotactically transformed into a mesocrystalline CoTiO3/TiO2 nanocomposite by heattreatment at above 600oC. The SAED result suggests that the CoTiO3/TiO2 nanocomposite is constructed from [010]‐oriented CoTiO3 nanocrystals and [110]‐oriented rutile TiO2 nanocrystals. The electrochemical results indicate that mesocrystalline CoTiO3/TiO2 nanocomposite exhibits an extremely enhanced anode capacity of about 400 mAh·g‐1 for LIB, which is two times higher than that of polycrystalline CoTiO3. The excellent anode performance is attributed to the high mobility of Li+ in the mesocrystalline nanocomposite and the synergistic effect of TiO2 nanocrystals in the nanocomposite by enhancing cycling stability and electron conductivity. Ⅱ.Results | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 書誌情報 |
ja : 香川大学インターナショナルオフィスジャーナル en : Journal of Kagawa University International Office 巻 14, p. 124-125, 発行日 2022-03-31 |
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| 出版者 | ||||||||||||||||||
| 出版者 | 香川大学インターナショナルオフィス | |||||||||||||||||
| 言語 | ja | |||||||||||||||||
| ISSN | ||||||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||||||
| 収録物識別子 | 1884-8745 | |||||||||||||||||
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| 収録物識別子タイプ | NCID | |||||||||||||||||
| 収録物識別子 | AA12724987 | |||||||||||||||||
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| 出版タイプ | VoR | |||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||
