title: High-Performance Anode Material Sr2FeMo0.65Ni0.35O6-δ with In Situ Exsolved Nanoparticle Catalyst.
abstract: A metallic nanoparticle-decorated ceramic anode was prepared by in situ reduction of the perovskite Sr2FeMo0.65Ni0.35O6-δ (SFMNi) in H2 at 850 °C. The reduction converts the pure perovksite phase into mixed phases containing the Ruddlesden-Popper structure Sr3FeMoO7-δ, perovskite Sr(FeMo)O3-δ, and the FeNi3 bimetallic alloy nanoparticle catalyst. The electrochemical performance of the SFMNi ceramic anode is greatly enhanced by the in situ exsolved Fe-Ni alloy nanoparticle catalysts that are homogeneously distributed on the ceramic backbone surface. The maximum power densities of the La0.8Sr0.2Ga0.8Mg0.2O3-δ electrolyte supported a single cell with SFMNi as the anode reached 590, 793, and 960 mW cm(-2) in wet H2 at 750, 800, and 850 °C, respectively. The Sr2FeMo0.65Ni0.35O6-δ anode also shows excellent structural stability and good coking resistance in wet CH4. The prepared SFMNi material is a promising high-performance anode for solid oxide fuel cells.
authors.affiliation: School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Du
authors.affiliation: School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.|The Beijing Municipal Key Laboratory of New Energy Materials and Technologies , Beijing 100083, China.
authors.forename: Hailei
authors.initials: H
authors.lastname: Zhao
authors.affiliation: School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Sha
authors.initials: S
authors.lastname: Yi
authors.affiliation: School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Xia
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Gong
authors.affiliation: School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Cheng
authors.affiliation: Department of Materials Science and Engineering, Beijing Institute of Petrochemical Technology , Beijing 102617, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics Institute of Physics, Chinese Academy of Sciences , Beijing 100190, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Gu
authors.affiliation: Faculty of Energy and Fuels, Department of Hydrogen Energy, AGH University of Science and Technology , 30-059 Krakow, Poland.
authors.forename: Konrad
authors.initials: K
authors.lastname: Świerczek
keywords: anode; electrochemical performance; in situ exsolution; nanoparticle catalysts; solid oxide fuel cells