کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1526899 | 1511852 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Composite cathode La0.15Bi0.85O1.5-Ag for intermediate-temperature solid oxide fuel cells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Composite cathode La0.15Bi0.85O1.5-Ag for intermediate-temperature solid oxide fuel cells Composite cathode La0.15Bi0.85O1.5-Ag for intermediate-temperature solid oxide fuel cells](/preview/png/1526899.png)
چکیده انگلیسی
Composites consisting of silver and lanthanum stabilized bismuth oxide (La0.15Bi0.85O1.5) were investigated as cathodes for intermediate-temperature solid oxide fuel cells with doped ceria as electrolyte. No stable phases were formed via reaction between La0.15Bi0.85O1.5 and Ag. The microstructure of the interfaces between composite cathodes and Ce0.8Sm0.2O1.5 electrolytes was studied by scanning electron microscopy after sintering at various temperatures. Impedance spectroscopy measurements revealed that the performance of cathode fired at 700 °C was the best. When the optimum fraction of Ag was 50 vol.%, polarization resistance values for the LSB-Ag50 cathode were as low as 0.14 Ω cm2 at 700 °C and 0.18 Ω cm2 at 650 °C. The steady-state polarization investigations on LSB and LSB-Ag50 cathodes were performed using typical three-electrode test cells in air. The results showed that the LSB-Ag50 composite cathode exhibited a lower overpotential and higher exchange current density than LSB, which indicated the electrochemical performance of LSB-Ag50 for the oxygen reduction reaction was superior to the LSB.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 108, Issues 2â3, 15 April 2008, Pages 290-295
Journal: Materials Chemistry and Physics - Volume 108, Issues 2â3, 15 April 2008, Pages 290-295
نویسندگان
Zhan Gao, Zongqiang Mao, Jianbing Huang, Ruifeng Gao, Cheng Wang, Zhixiang Liu,