書誌事項
- タイトル別名
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- <i>Operando</i> Soft X-ray Emission Studies of Lithium-Ion Batteries
- オペランドナンXセン ハッコウ ブンコウ ニ ヨル リチウムイオン デンチ ノ ケンキュウ
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説明
We developed operando soft X-ray emission spectroscopy (XES) techniques to accurately investigate the redox reactions and electronic structures of cathode materials of lithium-ion batteries. The operando cell consists of a special electrode tip with Si3N4 membrane window, Li-metal counter electrode and electrolyte solution. Operando Mn 2p XES for LiMn2O4 thin film with electrochemical charge/discharge reactions was performed using ultrahigh-resolution XES spectrometer at BL07LSU of SPring-8. The XES spectra showed a reversible Mn 3d electronic-structure change during the charge-discharge process. A redox reaction of Mn3+ ⇔ Mn4+ by charge/discharge was revealed. We also found a strong charge-transfer effect between the Mn 3d and O 2p orbitals for the Mn4+ state. The change of the charge-transfer effect between the Mn3+ and Mn4+ states suggests the Mn-O bond strength should change during charge-discharge process, which would be related to degradation of the cycle performance.
収録刊行物
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- 表面科学
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表面科学 37 (2), 66-71, 2016
公益社団法人 日本表面科学会
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詳細情報 詳細情報について
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- CRID
- 1390001206456982016
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- NII論文ID
- 130005127235
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- NII書誌ID
- AN00334149
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- ISSN
- 18814743
- 03885321
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- NDL書誌ID
- 027104236
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- 本文言語コード
- ja
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- 資料種別
- journal article
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- データソース種別
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- JaLC
- NDLサーチ
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE
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- 抄録ライセンスフラグ
- 使用不可
