2019 Fiscal Year Research-status Report
カーバイド前駆体を用いた低温ナノポーラスグラフェン合成法の開発
| Project/Area Number |
19K15389
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| Research Institution | Tohoku University |
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Principal Investigator |
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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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | Porous carbon / Metallic carbides / Dealloying / Na-ion battery |
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| Outline of Annual Research Achievements |
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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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
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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| Strategy for Future Research Activity |
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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| Causes of Carryover |
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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