کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1262691 971886 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on rare earth electrolyte of SDC-LSGM
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Study on rare earth electrolyte of SDC-LSGM
چکیده انگلیسی

Ce0.85Sm0.15O1.925 (SDC) and La0.9Sr0.1Ga0.8Mg0.2O2.85 (LSGM) were synthesized using Glycine-Nitrate Process (GNP), and the composite electrolytes were prepared by mixing SDC and LSGM. An X-ray diffraction pattern indicated that the mixture of SDC and LSGM consisted of their original phases after heating at 1450 oC for 10 h. The electronic conductivity of SDC-LSGM composite electrolytes were measured by direct current polarization method using Hebb-Wagner ion blocking cell at 700–800 oC in the oxygen partial pressure range of 10−6–10−20 MPa and compared with the results of SDC. Typical polarization curves, which were theoretically predicted, were observed on all the samples. The slopes of lg σ e–lgPo2 plot for all the composite electrolytes agreed with the theoretically predicted value of −1/4 at some intermediate oxygen partial pressures and -1/6 at low oxygen partial pressure. The electronic conductivity of SDC-LSGM composite electrolytes decreased with the increase in LSGM content, whereas the ionic transport number ti of all the samples increased with the increase in LSGM content.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 26, Issue 2, April 2008, Pages 241-244