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Facet-dependent electrochemical performance and electronic structure of LiCoO2 polyhedral particles revealed by microscopic resonant X-ray photoelectron spectroscopy
https://repo.qst.go.jp/records/2000481
https://repo.qst.go.jp/records/2000481b845fa26-2170-4663-b74a-f4a8cc57878b
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||||||||||
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| 公開日 | 2024-05-23 | |||||||||||||||||||||||||
| タイトル | ||||||||||||||||||||||||||
| タイトル | Facet-dependent electrochemical performance and electronic structure of LiCoO2 polyhedral particles revealed by microscopic resonant X-ray photoelectron spectroscopy | |||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||||
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| 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 |
Wenxiong Zhang
× Wenxiong Zhang
× Eiji Hosono
× Daisuke Asakura
× Shingo Tanaka
× Masaki Kobayashi
× Naoka Nagamura
× Masaharu Oshima
× Jun Miyawaki
× Hisao Kiuchi
× Yoshihisa Harada
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| 抄録 | ||||||||||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||||||||||
| 内容記述 | The morphology of active material particles has a significant impact on the charge?discharge cycle performances of lithium-ion batteries because each crystal surface constructed by different elemental arrangements indicates various surface energies. The surface properties of each facet affect the stability of the interface between the facets of particles and electrolytes. In this study, we applied microscopic resonant photoelectron spectroscopy with a spatial resolution of 100 nm (3DnanoESCA system) to reveal the electronic structure of each facet of prototypical layered LiCoO2 cathode particles, where the characteristic facets are (001), (104), and (012). We detected the difference in an electronic structure near the valence-band maximum (around 1?3 eV) on different LiCoO2 facets, where the dominant Co 3d bands at the valence band of the (001), (104) and (012) facets showed binding energies of 2.48, 2.25 and 2.02 eV, respectively. The closer Co 3d band of the (012) facet to the Fermi level makes it easier to lose electrons than the other facets, suggesting its more reactive property than the other facets. This technique, which provides the electronic structure of each crystal facet, is useful for designing active materials with excellent charge?discharge cycle performances. | |||||||||||||||||||||||||
| 書誌情報 |
CrystEngComm 巻 25, 号 2, p. 183-188, 発行日 2022-10 |
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| 出版者 | Royal Society of Chemistry | |||||||||||||||||||||||||
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| 収録物識別子タイプ | ISSN | |||||||||||||||||||||||||
| 収録物識別子 | 1466-8033 | |||||||||||||||||||||||||
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| 識別子タイプ | DOI | |||||||||||||||||||||||||
| 関連識別子 | 10.1039/D2CE01185A | |||||||||||||||||||||||||
