Pd-impregnated SYT/LDC composite as sulfur-tolerant anode for solid oxide fuel cells

Journal Article · Sat Mar 14 00:00:00 EDT 2009 · Journal of Power Sources

DOI:https://doi.org/10.1016/j.jpowsour.2009.03.009· OSTI ID:965996

Lu, Xiaochuan ^[1]; Zhu, Jiahong ^[2]; Yang, Zhenguo ^[1]; Xia, Guanguang ^[1]; Stevenson, Jeffry W ^[1]

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1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
2. Tennessee Technological Univ., Cookeville, TN (United States)

An Sr_0.88Y_0.08TiO_3-δ (SYT)/ La_0.4Ce_0.6O_1.8 (LDC) composite impregnated with Pd was evaluated as a sulfur-tolerant anode for the La_0.8Sr_0.2Ga_0.83Mg_0.17O_3-δ (LSGM)-supported cells. The impregnation of Pd into the porous SYT/LDC anode was found to significantly enhance the anode performance. With the addition of 1.5 wt % Pd into the anode, the anodic overpotential was reduced to about half of the original value. The single cell with the Pd-impregnated SYT/LDC anode showed a maximum power density of 1006 and 577 mW/cm² at 850 and 800°C in dry H₂, respectively, which was more than twice of that prior to impregnation. The Pd-impregnated composite anode exhibited good tolerance to sulfur, with essentially no decay in performance in H₂ containing up to 50 ppm H₂S.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 965996
• Report Number(s): PNNL-SA-65366
• Journal Information: Journal of Power Sources, Vol. 192, Issue 2; ISSN 0378-7753
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
25 ENERGY STORAGE