| Project/Area Number |
20K22458
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0401:Materials engineering, chemical engineering, and related fields
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| Research Institution | Tohoku University |
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Principal Investigator |
Tang Rui 東北大学, 材料科学高等研究所, 特任助教 (70880144)
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| Project Period (FY) |
2020-09-11 – 2022-03-31
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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | ionic liquid / templated carbon / supercapacitors / template carbon |
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| Outline of Research at the Start |
Supercapacitor is an energy storage device featured by high power density, whereas its energy density needs to be further increased. Ionic liquids are considered as promising electrolytes for nextgeneration high-performance supercapacitors from their intrinsically higher stability compared with traditional organic electrolytes. However, the ion transfer of ionic liquids is inferior and hinders fast charge/discharge. In this proposed research,the optimum carbon electrode structure is explored to maximize the performance of supercapacitors using ionic liquids as electrolytes.
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| Outline of Final Research Achievements |
1. The electrochemical degradation of an ionic liquid was investigated using a variety of carbon materials including carbon blacks, activated carbons, zeolite templated carbon, and mesoporous templated carbon. The carbon basal plane was found to be involved in the degradation reactions.
2. The structure of a mesoporous templated carbon was controlled to have different graphene stacking numbers and various amounts of nitrogen doping. It is found that the capacitance has a quantum origin and we successfully quantified the quantum capacitance for a full understanding of the origin of capacitance. Furthermore, the nitrogen-doped mesoporous templated carbon shows enhanced quantum capacitance and a good overall performance in ionic liquid-based supercapacitors.
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| Academic Significance and Societal Importance of the Research Achievements |
The sustainability of modern society calls for a mart utilization of electric power, and therefore energy storage devices including batteries and supercapacitors are intensively investigated to support it. In this research, we developed a new understanding and new materials for supercapacitors.
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