研究課題/領域番号 |
22K04852
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研究機関 | 北海道大学 |
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 / intermetallics / nanoparticles / AgPt / structure transition / ORR / Pt alloy / co-sputter deposition |
研究実績の概要 |
Bimetallic AgPt with various compositions were prepared by cosputter deposition. Substrates including liquid polyethylene glycol, solid substrate, and transmission electron microscope (TEM) grids were used. The sputter conditions were studied to obtain equimolar AgPt alloy. The structure and composition analysis confirmed the formation of solid solution alloy. Besides, trimetal alloy nanoparticles (AgPtCu) were synthesized. The catalytic performance in oxygen reduction reaction (ORR) were evaluated for tri- and bi-metal alloy nanoparticles and sputtered Pt nanoparticles. AgPt was found to outperform others. The improvement was thought to arise from the stable structure of AgPt and the formation of AgPt alloy.
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現在までの達成度 (区分) |
現在までの達成度 (区分)
3: やや遅れている
理由
The PI took maternity and childcare leaves in 2022 (April 2022, partially in August-September), and from October 2022 to March 2023. Therefore the research progress in FY 2022 was somehow delayed compared with the original plan.
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今後の研究の推進方策 |
For FY 2023: the disordered-ordered structure transition of AgPt will be examined for different particle size and under different gaseous environment. Moreover, composition dependence of disordered-ordered structure transition will be studied this year.
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次年度使用額が生じた理由 |
Because I took the maternity and childcare leave in FY 2022, the research was not progressed with full time and grant for FY 2022 was not used up. The left amount of the budget for FY 2022 was transferred to the next year for the research. Two metal targets is planed to be purchased in FY 2023. High-resolution TEM grids will also be purchased for analysis of the samples.
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