کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5149569 | 1497885 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation on Sr0.2Na0.8Nb1âxVxO3 (x=0.1, 0.2, 0.3) as new ceramic anode materials for low-temperature solid oxide fuel cells
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Investigation on Sr0.2Na0.8Nb1âxVxO3 (x=0.1, 0.2, 0.3) as new ceramic anode materials for low-temperature solid oxide fuel cells Investigation on Sr0.2Na0.8Nb1âxVxO3 (x=0.1, 0.2, 0.3) as new ceramic anode materials for low-temperature solid oxide fuel cells](/preview/png/5149569.png)
چکیده انگلیسی
Variants of SNNV (Sr0.2Na0.8Nb1âxVxO3, X = 0.1-0.3) ceramic oxides were synthesized via wet chemical method. SNNVs show high electronic conductivity of >100 S/cm when reduced in hydrogen at a relatively low temperature of 650 °C. In particular, 30% V-doped SNNV exhibited the highest conductivity of 300 S/cm at 450 °C. In order to investigate the fuel cell performance, Gd0.1Ce0.9O2âδ (GDC) based electrolyte-supported fuel cells were prepared to study the anode characteristics. Sr0.2Na0.8Nb0.9V0.1O3 (SNNV10)-GDC composite was used as an anode and La0.6Sr0.4Co0.2Fe0.8O3âδ (LSCF)-GDC as a cathode. Both electrodes were porous and sintered at 1050 °C for 2 h in air. The anode side of the fuel cell was infiltrated with 10 wt% GDC/Ni-GDC precursor to activate the anode for fuel oxidation. I-V characteristics were determined in gas conditions such as dry/humidified hydrogen and methane at 650 °C. With the infiltration Ni-GDC, peak power density (PPD) of 280 mW/cm2 and 220 mW/cm2 in dry H2 and CH4, respectively, were obtained at 650 °C, which is higher than GDC alone as infiltrate. The high resistances in the humidified conditions are attributed to the lower conductivity of SNNV10 in high PO2 atmospheres.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 347, 15 April 2017, Pages 277-282
Journal: Journal of Power Sources - Volume 347, 15 April 2017, Pages 277-282
نویسندگان
Ke-Ji Pan, A. Mohammed Hussain, Eric D. Wachsman,