| Project/Area Number |
25630270
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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 materials/Physical properties
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| Research Institution | Hokkaido University |
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Principal Investigator |
NISHII Junji 北海道大学, 電子科学研究所, 教授 (60357697)
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 燃料電池 / プロトン伝導体 / ガラス / 機能性ガラス / プロトン / プロトン伝導 / イオン置換 / 水素 / コロナ放電 |
|---|
| Outline of Final Research Achievements |
Corona discharge treatment was used for the proton injection to oxide glasses. A highly durable Na2O-Nb2O5-P2O5 glass was fabricated using a melt quenching method. The glass block was cut and polished to a 0.5 mm thickness plate, which was treated with a corona plasma in hydrogen atmosphere at 400℃. The color of the treated area changed gradually, and passed completely through to the cathode side. The measurements of EDS and infrared absorption spectra revealed that approximately 50% of sodium ion was replaced to proton. However, other 50% remained in the glass matrix, which might be due to the electron conduction caused by the reduction of Nb5+ to Nb4+. Therefore, the glass composition based on the cations with high stability against the reduction must be developed for the proton conductors.
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