| 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 |
Revealing the Unusual Mechanism of Mixed Cationic and Anionic Redox in Oxyfluorosulfide Cathode for All-Solid-State Fluoride-Ion Batteries |
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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 |
|
主題Scheme |
Other |
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主題 |
Anions |
| キーワード |
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|
言語 |
en |
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主題Scheme |
Other |
|
主題 |
Electrodes |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Ions |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Materials |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Redox reactions |
| 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 |
Cao Zulai
Yamamoto Kentaro
Matsunaga Toshiyuki
Watanabe Toshiki
Kumar Mukesh
Thakur Neha
Ohashi Ryogo
Tachibana Shintaro
Miki Hidenori
Ide Kazuto
Iba Hideki
Kiuchi Hisao
Harada Yoshihisa
Orikasa Yuki
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 |
All-solid-state fluoride-ion batteries (FIBs) have been considered next-generation energy storage devices because of their high theoretical energy density. However, previously reported metal/metal fluoride active materials suffer from severe degradation due to large volume expansion; consequentially, fluoride-ion-intercalating active materials fail to deliver a high capacity. Here, oxyfluorosulfide Sr2F2Fe2OS2 (SFFOS) with a layer structure is reported as a topotactic fluoride-ion (de)intercalation host. This material delivers a high reversible capacity of more than 340 mAh g–1, which remains well maintained after 20 cycles. The intercalation reaction mechanism for this high and stable capacity is elucidated via X-ray diffraction and fine structure analysis. Wherein both Fe2+/Fe3+ redox and sulfide ion redox are involved in charge compensation during charge/discharge processes, where the sulfide ion redox contributes to the whole voltage range of −1.5 to 1.5 V and Fe2+/Fe3+ redox only contributes from the middle state of charge. Fluoride ions can not only insert into the Sr–S interstitial sites but also combine with Fe cations. Meanwhile, excessive fluoride-ion intercalation leads to the formation of S–S bonds in the SFFOS lattice. These results highlight the oxyfluorosulfides with layer structure as a new class of active materials for constructing high-performance FIBs. |
|
言語 |
en |
| bibliographic_information |
en : Chemistry of Materials
巻 36,
号 4,
p. 1928-1940,
発行日 2024-02-14
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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 |
1520-5002 |
| item_10001_relation_14 |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1021/acs.chemmater.3c02650 |
| 権利 |
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|
権利情報 |
© American Chemical Society |
|
言語 |
en |
| 出版タイプ |
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|
出版タイプ |
NA |
|
出版タイプResource |
http://purl.org/coar/version/c_be7fb7dd8ff6fe43 |
