研究課題/領域番号 |
18K05299
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研究機関 | 九州大学 |
研究代表者 |
ステイコフ アレキサンダー 九州大学, カーボンニュートラル・エネルギー国際研究所, 准教授 (80613231)
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研究期間 (年度) |
2018-04-01 – 2021-03-31
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キーワード | ionic mobility |
研究実績の概要 |
In FY2019 I have investigated the ionic migration in perovskite oxides as a function of the coordination spheres and partial covalence. I could derive a quantum mechanical principle showing the difference in ionic migration between pairs of cations. The most relevant was the difference in ionic migration between Sr and La. This result can have direct implication on the Sr-segragation which is a major degradation mechanism for the electrode surfaces of SOFCs. The model material in our study is LSGM with allows the comparison anion / cation; on the A-site earth alkaline / rare earth; and on the B-site earth alkaline / post transition element. We have demonstrated that the ionic mobility is in the following order: O >> Sr > La >> Mg > Ga.
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現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
In FY 2019 I had 2 invited talks on international events and 2 contributed talks at international conferences. My results were well accepted by the SSI community. So far 2 manuscripts have been published and a this one is in preparation.
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今後の研究の推進方策 |
During the third year of the project, I will focus on degradation of proton conducting oxides.
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次年度使用額が生じた理由 |
In FY 2020 I will use the grant budget for software support, consumable cost like electricity for the computers, support of the computers.
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