| 研究課題/領域番号 |
18K13993
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| 研究機関 | 九州大学 |
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研究代表者 |
Klotz Dino 九州大学, カーボンニュートラル・エネルギー国際研究所, 助教 (00814849)
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| 研究期間 (年度) |
2018-04-01 – 2022-03-31
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| キーワード | oxygen exchange reaction / impedance spectroscopy / ionic conductivity |
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| 研究実績の概要 |
First experiments have been conducted successfully. Findings have been presented on international conferences. Investigated materials were Pr-doped CeO2, Gd-dioed CeO2, Strontium Titanate and Fe-doped Strontium Titanate. The measurement setups have been expanded and allow now for detailed analysis of gas, temperature and light (intensity and wavelength) dependency of the oxygen exchange reaction. During the last year, the focus has been on improving the sensitivity of the light intensity measurement. Therefore, the light source was changed from an LED to a laser diode. The measurement technique "intensity-modulated photocurrent spectroscopy (IMPS)" has been adapted for use in those materials (previously it was only used for solar cells and water splitting devices). Ways to distinguish surface exchange behaviour from bulk diffusion behaviour have been developed.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
3: やや遅れている
理由
The preliminary measurements have been performed but for the final publications, two more measurements are required. The setup had to be expanded to reach a better signal-to-noise ratio for measuring the dynamic light absorption. This has been delayed because business trips to visit collaborators (sample production) had to be cancelled due to the pandemic and shutdown of the laboratories of the collaborators at MIT and PSI.
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| 今後の研究の推進方策 |
The missing samples are expected to arrive in May or June. Then the final experiments will be conducted and the final publications will be completed. If the travel restrictions are lifted, another business trip for final clarifications and discussions at MIT will be made.
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| 次年度使用額が生じた理由 |
Main expenditure for next fiscal year is a business trip to MIT for final discussions. Apart from that, materials for sample production and contacting and consumables are required for the final measurements.
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