کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7717659 | 1497476 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of Sr and Al or Fe co-doping on the sinterability and conductivity of lanthanum silicate oxyapatite electrolytes for solid oxide fuel cells
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of Sr and Al or Fe co-doping on the sinterability and conductivity of lanthanum silicate oxyapatite electrolytes for solid oxide fuel cells Effect of Sr and Al or Fe co-doping on the sinterability and conductivity of lanthanum silicate oxyapatite electrolytes for solid oxide fuel cells](/preview/png/7717659.png)
چکیده انگلیسی
The effect of co-doping of Sr and Al or Fe on the microstructure, sinterability and oxide-ion conductivity of lanthanum silicate oxyapatites is investigated in detail at 300-800 °C by the electrochemical impedance spectroscopy. The oxide-ion conductivity is 1.46 Ã 10â2 S cmâ1 for La9.5Sr0.5Si5.5Fe0.5O26.5 (LSSFO) and 1.34 Ã 10â2 S cmâ1 at 800 °C for La9.5Sr0.5Si5.5Al0.5O26.5 (LSSAO), respectively, which is one order of magnitude higher than 6.16 Ã 10â3 S cmâ1 measured on La9.67Si6O26.5 (LSO) oxyapatite under the identical test conditions. The grain bulk and grain boundary resistances of co-doped oxyapatite are significantly smaller than that of LSO oxyapatite, and decrease significantly with the increase of the sintering temperature. LSSFO and LSSAO also show significantly higher density as compared to that of LSO. The results indicate that co-doping of Sr and Al or Fe significantly improves the densification, sinterability and oxide-ion conductivity of lanthanum silicate oxyapatites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 33, 11 November 2014, Pages 19093-19101
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 33, 11 November 2014, Pages 19093-19101
نویسندگان
Xiao Guo Cao, San Ping Jiang,