Design Principles of Perovskites for Thermochemical Oxygen Separation
نویسندگان
چکیده
منابع مشابه
Design Principles of Perovskites for Thermochemical Oxygen Separation.
Separation and concentration of O2 from gas mixtures is central to several sustainable energy technologies, such as solar-driven synthesis of liquid hydrocarbon fuels from CO2 , H2 O, and concentrated sunlight. We introduce a rationale for designing metal oxide redox materials for oxygen separation through "thermochemical pumping" of O2 against a pO2 gradient with low-grade process heat. Electr...
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Perovskites are attractive redox materials for thermo/electrochemical fuel synthesis. To design perovskites with balanced redox energetics for thermochemically splitting CO2, the activity of lattice oxygen vacancies and stability against crystal phase changes and detrimental carbonate formation are predicted for a representative range of perovskites by electronic structure computations. Systema...
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First-principles thermodynamic study of oxygen vacancies in ABO3-type perovskites
ABO3-type perovskite oxides comprise a wide class of materials with numerous technological applications, ranging from optics to electrochemistry. The ideal perovskite structure is cubic, but this form usually exists only at high temperatures; while most perovskites have lower symmetry at room temperature and below. Oxygen vacancies are, perhaps, the most common intrinsic point defects observed ...
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ژورنال
عنوان ژورنال: ChemSusChem
سال: 2015
ISSN: 1864-5631
DOI: 10.1002/cssc.201500239