| 研究領域 | ２．５次元物質科学：社会変革に向けた物質科学のパラダイムシフト |
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| 研究課題/領域番号 |
22H05478
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| 研究機関 | 国立研究開発法人産業技術総合研究所 |
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研究代表者 |
Lin YungChang 国立研究開発法人産業技術総合研究所, 材料・化学領域, 主任研究員 (90772244)
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| 研究期間 (年度) |
2022-06-16 – 2024-03-31
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| キーワード | Intercalation / STEM / 2D materials / graphene |
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| 研究実績の概要 |
In this fiscal year, we investigated the intercalation of alkali metals and metal chlorides in bilayer graphene (BLG), analyzing their structure and properties. We used TEM to visualize the intercalated material and studied its structural dynamics. Our findings show that the intercalated structures have a great variety that is distinct from the starting material. For instance, MoCl5 reassembles into a MoCl3 structure after intercalation. Furthermore, the intercalated MoCl3 structure exhibits significant lattice distortion and frequent structural transformations. Additionally, we observed that FeCl3 resulted in a mixture of FeCl3 and FeCl2 after intercalation in BLG. Oxidation of FeCl3 occurred at the edge of the intercalated domain, leading to the formation of FeOCl in the structure.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
We have prepared a manuscript based on the results of MoClx intercalation in BLG, which has been submitted to the journal Nature Communications. Additionally, we are currently preparing another paper regarding our study of FeCl3 intercalation. Furthermore, we have discovered an unexpected stacking structure in alkali metal intercalation in BLG.
In addition to these findings, we have designed a custom-made TEM-compatible MEMS chip, and the first patch has been fabricated. This will be used to conduct in-situ intercalation experiments in TEM.
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| 今後の研究の推進方策 |
We will be conducting in-situ intercalation experiments using our custom-made MEMS chip to investigate the intercalation dynamics of electrolytes, metal ions, and metal chlorides. This experiment will be conducted directly in a TEM, which will enable us to observe the intercalation process at high resolution.
To achieve this, we have designed a TEM sample holder that can apply electronic bias to the MEMS chip, allowing us to control the intercalation process. We will be studying the intercalation of various types of intercalants, and will be examining the process by which the electrolyte intercalates in or out of the gap of BLG.
This experiment will provide new insights into the intercalation process, and will help us understand the dynamics of intercalation at the atomic level.
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