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

Yanya Liu; Lichao Jia; Bo Chi; Jian Pu; Jian Li

doi:10.1021/acsomega.9b03193

In Situ Exsolved Ni-Decorated Ba(Ce_0.9Y_0.1)_0.8Ni_0.2O_3-δ Perovskite as Carbon-Resistant Composite Anode for Hydrocarbon-Fueled Solid Oxide Fuel Cells

ACS Omega. 2019 Dec 4;4(25):21494-21499. doi: 10.1021/acsomega.9b03193. eCollection 2019 Dec 17.

Authors

Yanya Liu¹, Lichao Jia¹, Bo Chi¹, Jian Pu¹, Jian Li¹

Affiliation

¹ Center for Fuel Cell Innovation, School of Materials Science and Engineering and MOE Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science and Technology, Wuhan 430074, China.

Abstract

In this study, in situ exsolved Ni-Ba(Ce_0.9Y_0.1)_0.8Ni_0.2O_3-δ+Gd_0.1Ce_0.9O_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.