| 研究課題/領域番号 |
19K15389
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| 研究機関 | 東北大学 |
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研究代表者 |
韓 久慧 東北大学, 学際科学フロンティア研究所, 助教 (40823092)
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| 研究期間 (年度) |
2019-04-01 – 2023-03-31
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| キーワード | Porous carbon / Metallic carbides / Dealloying / Na-ion battery |
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| 研究実績の概要 |
On the basis of our carbide-mediated graphene growth method, we developed a novel room-temperature carbide-mediated chemical dealloying technique for synthesizing 3D porous carbon with well-defined bicontinuous porosity down to the sub-nm scale. We also succeeded in integrating meso- and micro-porosities, both with tailorable feature sizes, in a hierarchical architecture, achieving 3D bimodal porous carbon with a large surface area, high electric conductivity, and excellent ion diffusion kinetics. This material has been demonstrated to be a promising anode for high-rate Na-ion batteries. Using it as a model system, we also clarified the structure-property relationship of porous amorphous carbon material for the Na-ion battery application.
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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
In this project, we aim to develop the carbide mediation method as a facile, low-cost and mass-production approach for fabricating multiscale nanoporous graphene/carbon materials and to explore the functional applications of these new materials for catalysis, sensors, and energy conversion and storage. To this end, we've succeeded in engineering the pore size of 3D nanoporous carbon materials down to the sub-nm scale and in a well controllable manner. We've also demonstrated the promising application of our newly developed materials for the electrochemical energy storage in Na-ion batteries. Therefore, our research proceeds smoothly as initially planned.
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| 今後の研究の推進方策 |
Our future research will follow our initial research plans, which focuses on the following: (1) Synthesis of 3D nanoporous graphene/carbon with controllable pore sizes; (2) Synthesis of chemically doped nanoporous graphene/carbon; (3) Functional applications of the new nanoporous graphene/carbon materials.
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| 次年度使用額が生じた理由 |
In FY2019, the research has been mainly supported by other funding resources such as the laboratory operation fund from the university. The Amount to be Used Next Fiscal Year will be used for consumables, travel expenses, and miscellaneous.
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