| Project/Area Number |
15K18214
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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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 | Kyushu University |
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Principal Investigator |
Hyodo Junji 九州大学, 稲盛フロンティア研究センター, 特任助教 (70736149)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 酸化物イオン伝導体 / 界面 / 固体酸化物型燃料電池 / 二次イオン質量分析 / 交流インピーダンス測定 / 混合伝導体 / 酸化物界面 / 界面交換反応係数 / 電極過電圧 / 界面イオン交換 / 同位体交換法 |
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| Outline of Final Research Achievements |
In this research, quantitative evaluation of oxide ion exchange coefficient at the solid electrolyte - electrode interface was performed to improve the cathode performance of solid oxide fuel cells. The new isotope oxygen exchange technique from solid to solid was developed. It was found that the developed technique enables to estimate the oxide ion exchange coefficient at the solid interface quantitatively. Obtained value of interface exchange coefficient using this technique was substantially higher than that of surface exchange coefficient from the gas phase. Furthermore, the correlation between the interface exchange coefficient and electrochemical resistance was also confirmed. It was found that the resistance at high-frequency region could be assigned as the oxide ion exchange resistance at the solid-solid interface.
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