| 研究課題/領域番号 |
22K04852
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| 研究機関 | 北海道大学 |
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研究代表者 |
グエン タンマイ 北海道大学, 工学研究院, 助教 (00730649)
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| 研究期間 (年度) |
2022-04-01 – 2025-03-31
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| キーワード | solid solution alloy / bimetallic oxide / oxygen reduction / oxygen evolution / in-situ heating / ordered structure / Heating STEM |
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| 研究実績の概要 |
Slightly Pt rich-AgPt solid solution alloy nanoparticles were produced via co-sputter deposition. The preparation for study of temperature dependent structure changes via in-situ scanning transmission electron microscope (STEM) heating has been carried out. The structure transformation of the sputtered nanoparticles from solid solution alloy to L11 ordered structure was successfully observed with in-situ STEM, depending on the temperature. In addition, alloy nanoparticles of different compositions and sizes were prepared for study the structure changes under in-situ heating to different temperatures. Besides, bimetallic alloy oxide nanoparticles and spinel oxides of Fe-Co-Ni metal group were synthesized with enhanced catalytic properties for use in rechargeable metal air batteries.
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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
The research progressed as planed and another research branch was also developed regarding synthesis of bi-, tri-metallic oxides as electrocatalysts for the oxygen redox reactions.
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| 今後の研究の推進方策 |
The temperature for ordered structure formation for different compositions of the solid solution alloy nanoparticles will be examined with in situ heating STEM and the underlying mechanism will be investigated.
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| 次年度使用額が生じた理由 |
A metal target for experiment was not purchased as the research was revised. The left amount of the budget for FY 2023 will be transferred to the next year for the research. MEMS-chips for heating under different gaseous environment will be bought for research.
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