| Project/Area Number |
23560809
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Gunma National College of Technology |
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Principal Investigator |
OTA Michiya 群馬工業高等専門学校, その他部局等, 教授 (40168951)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | リチウムイオン二次電池用炭素負極材 / 炭素小球体 / 粒子径制御 / 急速充電 / 放電容量 / 細孔 / 比容量 / レート特性 / 樹脂小球体 / コイン型セル / 放電曲線 / 結晶構造 / 細孔構造 / リチウムイオン二次電池炭素負極材 / クーロン効率 / ガス吸着 / サイクリックボルタモグラム |
|---|
| Research Abstract |
Porous resin-based microspheres were prepared from the mixture of pyrene-based thermosetting resin and polyethylene glycol in a presence of acid catalyst by heating and stirring. The low polymerization degree of the resin was much important and then the particle size of the microspheres were 1-2 micrometer. The microspheres seemed to be the aggregates with open cleft on the surfaces. The carbon microspheres heat-treated at 1000 to 2500 degree C were evaluated as anode materials for batteries, compared with the results of graphite. Specific discharge capacities of graphite anode rapidly decreased down to 10 % at 100 to 2000 mA/g as a current density. On the other hand, those of carbon sphere anodes decreased only down to 47 %. These results suggest that those carbon spheres have several possibilities such as rapid charging and high discharge capacitance.
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