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Effect of Pd-impregnation on performance, sulfur poisoning and tolerance of Ni/GDC anode of solid oxide fuel cells

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Effect of Pd-impregnation on performance, sulfur poisoning and tolerance of Ni/GDC anode of solid oxide fuel cells
นักวิจัย : Zheng, Lu Lu , Wang, Xin , Zhang, Lan , Wang, Jing-Yuan , Jiang, San Ping
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Zheng, L. L., Wang, X., Zhang, L., Wang, J.-Y., & Jiang, S. P. (2012). Effect of Pd-impregnation on performance, sulfur poisoning and tolerance of Ni/GDC anode of solid oxide fuel cells. International Journal of Hydrogen Energy, 37(13), 10299-10310. , 0360-3199 , http://hdl.handle.net/10220/11549 , http://dx.doi.org/10.1016/j.ijhydene.2012.03.105
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : International journal of hydrogen energy
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Sulfur tolerance of Ni/Gd2O3–CeO2 (Ni/GDC) anodes promoted by impregnated palladium nanoparticles is investigated using the electrochemical impedance spectroscopy (EIS) and galvanostatic polarization techniques in the H2–H2S fuels at 800 °C. The anodes are alternately polarized in pure H2 and H2S-containing H2 fuels with H2S concentration gradually increased from 5 to 700 ppm at 200 mA cm−2. The degradation in performance for the hydrogen oxidation in H2S-containing H2 fuels especially at low H2S concentration is substantially smaller on Pd-impregnated Ni/GDC cermet anodes, as compared to that on pure Ni/GDC anodes. The potential of Pd-impregnated Ni/GDC electrodes measured in pure H2 decreases by 0.07 V after exposure to H2S-containing H2 fuels, substantially smaller than 0.13 V observed on pure Ni/GDC anodes under identical test conditions. The results show that Pd impregnation significantly enhances the sulfur tolerance of Ni/GDC cermet anodes particularly in the low H2S concentration range (e.g., <100 ppm). The results indicate that the enhanced sulfur tolerance of Pd impregnated Ni/GDC anodes is most likely due to the promotion effect of impregnated Pd nanoparticles on the hydrogen dissociation and diffusion processes. The reduced moderation of the morphology and microstructure of the anodes in the presence of Pd nanoparticles may be the result of weaker interaction or adsorption of sulfur on Ni and GDC phases.

บรรณานุกรม :
Zheng, Lu Lu , Wang, Xin , Zhang, Lan , Wang, Jing-Yuan , Jiang, San Ping . (2555). Effect of Pd-impregnation on performance, sulfur poisoning and tolerance of Ni/GDC anode of solid oxide fuel cells.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zheng, Lu Lu , Wang, Xin , Zhang, Lan , Wang, Jing-Yuan , Jiang, San Ping . 2555. "Effect of Pd-impregnation on performance, sulfur poisoning and tolerance of Ni/GDC anode of solid oxide fuel cells".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zheng, Lu Lu , Wang, Xin , Zhang, Lan , Wang, Jing-Yuan , Jiang, San Ping . "Effect of Pd-impregnation on performance, sulfur poisoning and tolerance of Ni/GDC anode of solid oxide fuel cells."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Zheng, Lu Lu , Wang, Xin , Zhang, Lan , Wang, Jing-Yuan , Jiang, San Ping . Effect of Pd-impregnation on performance, sulfur poisoning and tolerance of Ni/GDC anode of solid oxide fuel cells. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.