| 研究課題/領域番号 |
19K05672
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| 研究機関 | 九州大学 |
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研究代表者 |
Kwati Leonard 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 (70734391)
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| 研究期間 (年度) |
2019-04-01 – 2025-03-31
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| キーワード | Protonic defects / Fuel cell / Electrolysis cell / Air electrode / Catalytic activity / Ionic transport / proton kinetics |
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| 研究実績の概要 |
Proton conductors are viable electrolytes for solid oxide fuel and Electrolysis cells. Although, significant progress has been made on developing them. The development of corresponding single-phase electrodes tailored explicitly for protonic electrolytes has been hindered by difficulties finding highly efficient mixed proton-electron conductors with effective catalytic activity toward ORR/OER. During the past year, the origin of catalytic activity in LnCo0.5Ni0.5O3-δ (Ln=Pr, La and Nd) perovskites was investigated by experiment and computation. First principle calculations using DFT and experimental results show that the catalytic activity, ionic transport, as well as electronic properties of these class of materials are direct consequences of the valence shell structure of the A-site cation.
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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
Mainly due to the COVID-19 pandemic. Progress on collaborative work in imperial college on proton kinetics was very much affected by the situation. The situation is becoming much better recently and hopefully our work will advance smoothly.
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| 今後の研究の推進方策 |
Phase III
Complete electrochemical evaluation of H+-SOFCs/ H+-SOECs performances and their stability assessment using the new P-MIECs under several pO2
and pH2O. H+-SOFCs with H2 and CH4.
Continue, work on proton kinetics through the bulk of protonic cathode materials by isotope exchange experiments (18O and 2D2O tracers) and
Time-of-Flight Secondary Ion Mass Spectrometry depth profiling
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| 次年度使用額が生じた理由 |
The present amount is what was left over and carried forward due to project extension.
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