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In this study, in situ exsolved Ni-Ba(Ce 0.9 Y 0.1 ) 0.8 Ni 0.2 O 3-δ +Gd 0.1 Ce 0.9 O 1.9 (Ni-BCYN+GDC) perovskite anode is studied for application in hydrocarbon-fueled solid oxide fuel cell (SOFC). The electrocatalytic activities of the oxidation reaction of anode in hydrogen and methane atmospheres are studied. The results show that the surface-exsolved Ni nanoparticles can significantly improve the electrochemical properties of the anode. The polarization resistances of the studied anode in hydrogen and methane atmospheres at 750 °C are as low as 0.0042 and 0.0054 Ω·cm -2 , respectively. At the same time, a 36 h short-term open-circuit voltage test under a methane atmosphere confirms that the Ni-BCYN+GDC composite anode exhibits a good carbon deposition resistance. These results demonstrate that the Ni-BCYN+GDC composite anode is a potential novel anode material candidate for hydrocarbon-fueled SOFC.

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In Situ Exsolved Ni-Decorated Ba(Ce0.9Y0.1)0.8Ni0.2O3−δ Perovskite as Carbon-Resistant Composite Anode for Hydrocarbon-Fueled Solid Oxide Fuel Cells