| アイテムタイプ |
default_学術雑誌論文 / Journal Article(1) |
| タイトル |
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タイトル |
Phase Transition Mechanism of ZnMn<sub>2</sub>O<sub>4</sub> Spinel Oxide with Electrochemical Magnesium-Ion Insertion |
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言語 |
en |
| 言語 |
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言語 |
eng |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Electrodes |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Oxides |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Phase transitions |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Spinel |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Transition metals |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
metadata only access |
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アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
| 著者 |
Yamamoto Kentaro
Tuerxun Feilure
Matsunaga Toshiyuki
Watanabe Toshiki
Uchiyama Tomoki
Abulikemu Aierxiding
Kanamura Kiyoshi
Uchimoto Yoshiharu
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Spinel oxides with 3d transition metals are expected to be cathode materials with high energy density for magnesium rechargeable batteries. Although it is important to control their phase transitions in order to reduce the polarization during charge/discharge processes for practical use, the relationship between the electrochemical properties and the phase transition mechanism of spinel oxides is not well understood. In this study, we examined the electrochemical properties and the phase transition mechanism of Mg2+ insertion into ZnMn2O4 spinel oxide by using the galvanostatic intermittent titration technique (GITT), X-ray absorption spectroscopy (XAS), and synchrotron X-ray diffraction (XRD) measurements and compared them to those of MgMn2O4 spinel oxide. Compared to MgMn2O4, the polarization was relatively small in ZnMn2O4 in the early stage of the Mg2+ insertion process (0 ≤ x ≤ 0.3) because the ZnMn2O4 spinel phase has a larger solid-solution limit for Mg2+ insertion. On the other hand, in the late stage of the Mg2+ insertion process (0.3 < x ≤ 0.58), the polarization of ZnMn2O4 was larger than that of MgMn2O4 due to the larger volume change between the spinel and rocksalt phases. The finding that the use of zinc stable at the tetrahedral configuration in spinel oxides can expand the solid-solution limit for Mg2+ insertion into the spinel phase and reduce the polarization is significant for the development of cathode materials in magnesium rechargeable batteries. |
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言語 |
en |
| bibliographic_information |
en : The Journal of Physical Chemistry C
巻 128,
号 5,
p. 1886-1892,
発行日 2024-01-26
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| 出版者 |
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出版者 |
American Chemical Society |
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言語 |
en |
| item_10001_source_id_9 |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
1932-7455 |
| item_10001_relation_14 |
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識別子タイプ |
DOI |
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関連識別子 |
10.1021/acs.jpcc.3c06518 |
| 権利 |
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権利情報 |
© American Chemical Society |
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言語 |
en |
| 出版タイプ |
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出版タイプ |
NA |
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出版タイプResource |
http://purl.org/coar/version/c_be7fb7dd8ff6fe43 |
https://doi.org/10.1021/acs.jpcc.3c06518
