Nickel B-site substitution in bulk Sr1−xCaxFeO3 perovskite oxygen carriers: Benefits and limitations
Journal of Alloys and Compounds(2022)
摘要
•Mild nickel substitution (y < 0.125) increases oxygen redox kinetics> 50% at 400–500 °C.•Nickel substitution limited by structural stability.•The oxygen vacancy formation energy decreases with nickel substitution.•NiO bonds in Sr1−xCaxFe1−yNiyO3 are elongated compared to FeO.
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关键词
Sr1−xCaxFeO3 perovskites,Thermogravimetric analysis,Density functional theory (DFT),Oxygen carrier,Nickel substitution
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