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  1. 原著論文

Ultra-High-Capacity of Earth-Abundant Cathodes Enabled by Excess Fluoride-Ion Insertion/Extraction

https://repo.qst.go.jp/records/2001818
https://repo.qst.go.jp/records/2001818
5b257621-cef0-41bd-8fed-dc28638a1c2e
アイテムタイプ 学術雑誌論文 / Journal Article(1)
公開日 2025-06-19
タイトル
タイトル Ultra-High-Capacity of Earth-Abundant Cathodes Enabled by Excess Fluoride-Ion Insertion/Extraction
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 journal article
著者 Yanchang Wang

× Yanchang Wang

Yanchang Wang

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Kyoto Univ.

× Kyoto Univ.

Kyoto Univ.

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Kentaro Yamamoto

× Kentaro Yamamoto

Kentaro Yamamoto

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Kyoto Univ.

× Kyoto Univ.

Kyoto Univ.

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Yuki Sakaguchi

× Yuki Sakaguchi

Yuki Sakaguchi

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Kyoto Univ.

× Kyoto Univ.

Kyoto Univ.

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Miyawaki Jun

× Miyawaki Jun

Miyawaki Jun

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Toshiyuki Matsunaga

× Toshiyuki Matsunaga

Toshiyuki Matsunaga

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Kyoto Univ.

× Kyoto Univ.

Kyoto Univ.

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Datong Zhang

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Datong Zhang

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Kyoto Univ.

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Kyoto Univ.

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Hisao Kiuchi

× Hisao Kiuchi

Hisao Kiuchi

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ISSP

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ISSP

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the Univ. of Tokyo

× the Univ. of Tokyo

the Univ. of Tokyo

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Zulai Cao

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Zulai Cao

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Kyoto Univ.

× Kyoto Univ.

Kyoto Univ.

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Koji Nakanishi

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Koji Nakanishi

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Univ. of Hyogo

× Univ. of Hyogo

Univ. of Hyogo

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Toshiki Watanabe

× Toshiki Watanabe

Toshiki Watanabe

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Kyoto Univ.

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Kyoto Univ.

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Neha Thakur

× Neha Thakur

Neha Thakur

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Kyoto Univ.

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Kyoto Univ.

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Mukesh Kumar

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Mukesh Kumar

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Kyoto Univ.

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Kyoto Univ.

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Hidenori Miki

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Hidenori Miki

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Toyota Motor Corp.

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Toyota Motor Corp.

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Hideki Iba

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Hideki Iba

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Toyota Motor Corp.

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Toyota Motor Corp.

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Kazuhiko Maeda

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Kazuhiko Maeda

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Inst. of Science Tokyo

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Inst. of Science Tokyo

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Yoshihisa Harada

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Yoshihisa Harada

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抄録
内容記述タイプ Abstract
内容記述 All-solid-state fluoride-ion batteries (FIBs) are highly prospective candidates for next-generation batteries due to their superior energy density and safety to lithium-ion batteries (LIBs). Nevertheless, the full potential of FIBs remains unrealized, as practical cathode materials remain elusive. Here, we report a perovskite oxyfluoride SrFeO2Fx exhibits topotactic F– (de)intercalation, providing a large capacity of 350 mAh g-1 (1843 mAh cm-3) with negligibly small volume expansion (~0.5 %). The large capacity is attributed to excess F– (de)intercalation of ~2.3 mol in SrFeO2Fx with Fe2+/Fe3+ redox and O–O bond formation (i.e., oxide ion redox). Furthermore, Sr substituted CaFeO2 (Ca0.8Sr0.2FeO2Fx) has the highest capacity of 580 mAh g-1 (3022 mAh cm-3) among cathode materials using the topotactic ion (de)intercalation, including LIBs. For the first time, we have presented the possibility that the utilization of ultimate anion redox associated with the ion (de)intercalation to achieve specific capacities surpassing current active materials by over twofold.
書誌情報 Advanced Energy Materials

巻 2025, 号 2406131, p. 1-9, 発行日 2025-06
出版者
出版者 Wiley-VCH GmbH
DOI
識別子タイプ DOI
関連識別子 10.1002/aenm.202406131
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