کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11020838 | 1715611 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transport properties of SrCo0.9Nb0.1O3-δ and SrCo0.9Ta0.1O3-δ mixed conductors determined by combined oxygen permeation measurement and phenomenological modeling
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Mixed oxide-ion and electron conductors (MIECs) are a scientifically and technologically important class of functional materials for energy conversion and storage. The present work reports a study on transport properties of two well-known MIECs, SrCo0.9Nb0.1O3-δ (SCN) and SrCo0.9Ta0.1O3-δ (SCT), using a combined experimental oxygen permeation measurement and theoretical modeling approach. The results suggest that SCN has a higher oxygen diffusivity, surface oxygen exchange rate constant and oxide-ion conductivity than SCT even though both materials have the same crystal structure. A molecular orbital energy analysis reveals that the slight difference in outer electronic shell configuration between Nb5+ and Ta5+ is responsible for the variance in transport properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 568, 15 December 2018, Pages 47-54
Journal: Journal of Membrane Science - Volume 568, 15 December 2018, Pages 47-54
نویسندگان
Tianrang Yang, Xinfang Jin, Kevin Huang,