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Effect of Mg-doping on the degradation of LiNiO2-based cathode materials by combined spectroscopic methods
http://hdl.handle.net/2237/20830
http://hdl.handle.net/2237/20830f2a335a1-f5ab-4980-b8b5-48e9de68d569
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
JPS2012.pdf (3.5 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2014-11-19 | |||||
| タイトル | ||||||
| タイトル | Effect of Mg-doping on the degradation of LiNiO2-based cathode materials by combined spectroscopic methods | |||||
| 言語 | en | |||||
| 著者 |
Muto, Shunsuke
× Muto, Shunsuke× Tatsumi, Kazuyoshi× Kojima, Yuji× Oka, Hideaki× Kondo, Hiroki× Horibuchi, Kayo× Ukyo, Yoshio |
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| 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 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | This is the author's version of a work that was accepted for publication in Journal of Power Sources. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms, may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Power Sources. v.205, 2012, p.449–455, DOI: 10.1016/j.jpowsour.2012.01.071 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Lithium ion secondary battery | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Electrochemical impedance spectroscopy | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Scanning transmission electron microscopy | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Electron energy loss spectroscopy | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Cathode | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Degradation | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The performance of a LiNiO2-based cell has been shown to be significantly improved by Mg-doping of LiNi0.8Co0.15Al0.05O2 (Mg-doped NCA) cathode materials. In the present study, the effects of Mg-doping were examined by electrochemical impedance spectroscopy (EIS) and scanning transmission electron microscopy-electron energy loss spectroscopy. EIS analysis revealed that the activation energy of Mg-doped NCA for the charge-transfer reaction was larger than that of undoped NCA by a factor of ∼10%; however, the charge-transfer resistance for Mg-doped NCA did not vary significantly with cycling, suggesting a different microstructure evolution compared to that of the undoped NCA. The spatial mapping of the product phases in the Mg-doped samples showed less degradation after charge–discharge cycling tests at 70 °C compared to that in the undoped samples. In addition, degraded regions observed near the surface of the primary active material particles were identified as an intermediate structure, containing tetrahedrally coordinated Ni in contrast to the NiO-like phase found in the undoped samples. These microstructural observations are consistent with the electrochemical measurements. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.jpowsour.2012.01.071 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0378-7753 | |||||
| 書誌情報 |
en : Journal of Power Sources 巻 205, p. 449-455, 発行日 2012-05 |
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| 著者版フラグ | ||||||
| 値 | author | |||||
| URI | ||||||
| 識別子 | http://dx.doi.org/10.1016/j.jpowsour.2012.01.071 | |||||
| 識別子タイプ | DOI | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/20830 | |||||
| 識別子タイプ | HDL | |||||
