| 研究課題/領域番号 |
19F19074
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| 研究機関 | 国立研究開発法人物質・材料研究機構 |
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研究代表者 |
目 義雄 国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, NIMS招聘研究員 (00354217)
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| 研究分担者 |
JIANG BO 国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, 外国人特別研究員
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| 研究期間 (年度) |
2019-04-25 – 2021-03-31
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| キーワード | nanoporous metal / membrane / electrocatalyst |
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| 研究実績の概要 |
We proposed a route to nanoporous metal films and nanoparticles with various pore sizes by a simple electrodeposition method and chemicalreduction method, respectively. Compared to traditional liquid crystals, the used concentrations of the amphiphilic block copolymers are much low. The nanopore sizes in the nanoporous metals could be widely tuned from 5 to 30 nm, by changing the sizes of the surfactants that are used and adding a hydrophobic aromatic compound as an expander. Also, we tested the electrochemical property of new nanoporous alloys. Hierarchical nanoporous systems inelectrocatalysts can provide more active sites and effective surface permeability, which will greatly boost the faradic currents in catalytic reactions and result in the enhancement of catalytic activity.
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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
This project aims to create new avenues for large-scale and well-controlled synthesis of novel hierarchical nanoporous metals-based architectures and develop new conductive ‘membranes’ for electrocatalysts. In FY 2019, we focused on the formation of nanoporous metals from aqueous surfactant solution.
We proposed a route to nanoporous metal films and nanoporous metal nanoparticles with various pore sizes by a simple electrodeposition method and chemicalreduction method, respectively.
The nanopore sizes in the nanoporous metals could be widely tuned from 5 to 30 nm.
We tested the electrochemical property of new nanoporous alloys.
We have published one paper and are preparing one.
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| 今後の研究の推進方策 |
Miniature fuel cells are considered as implantable micropower sources for medical devices. For these applications, it is desirable to prepare nanoporous metals in the form of membranes. For example, we will propose a new approach using diluted surfactant solutions for the preparation of Pt films with various types of nanopores by varying the surfactants and adding organic expanders. This approach allows for easy controlover the location, composition, thickness, and nanoporous structure of aparticular device, thus making it possible to design and fabricate new micro-DMFCs. Nanoporous catalytic layers can be uniformly coated on the conductive surface of membranes. The final target in this proposal is real applications in industry.
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