2015 Fiscal Year Final Research Report
Development of high capacity and reversible conversion reaction system by the assistance of nanospace
| Project/Area Number |
26620196
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Nagasaki University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
URITA Koki 長崎大学, 工学研究科, 助教 (40567666)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | ナノ多孔体 / コンバージョン反応 / 酸化スズ / フッ化鉄 / Ｌｉイオン電池 |
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| Outline of Final Research Achievements |
Almost perfect embedding of SnO2 nanocrystallites in carbon nanopores was achieved by in situ synthesis using vaporized SnCl2 and silica opal-derived nanoporous carbons. It was found that the reversibility of electrochemical reactions of SnO2 is enhanced by the confinement in carbon nanopores and excellent charge-discharge cycleablity is achieved by the regulation of carbon nanospace. The detailed investigations on the SnO2/nanoporous carbon composites with systematically controlled pore size and SnO2-loading amount disclosed that the capacity retention was extremely enhanced at lower pore volume filling fraction of SnO2 than the theoretical value taking into account of full volume expansion for conversion and alloying reactions.
We also succeeded to synthesize a FeF3/nanosporous carbon.
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| Free Research Field |
電気化学，コロイド界面化学
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