Copper and cobalt co-doped ceria as an anode catalyst for DIR-SOFCs fueled by biogas

• Published in: Solid state ionics Vol. 330; pp. 47 - 53
• Main Authors: Bochentyn, B., Chlipała, M., Gazda, M., Wang, S.-F., Jasiński, P.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.02.2019; Elsevier BV
• Subjects: Anodes; Biogas; Biogas reforming; Carbon deposition; Carbon monoxide; Catalysis; Catalysts; Catalytic activity; Cerium oxides; Cobalt; Copper; Direct internal reforming; FTIR; Fuel cells; Infrared analysis; Nanocrystals; Parameters; Reforming; SOFC; Direct internal reforming; Biogas reforming; Carbon deposition; FTIR; SOFC
• ISSN: 0167-2738; 1872-7689
• DOI: 10.1016/j.ssi.2018.12.007

The nanocrystalline compounds of Co and Cu co-doped ceria (with up to 20 mol% of dopants) were fabricated by the reverse microemulsion synthesis method. They were deposited in a form of layers on the surface of SOFC anode in an aim to act as electrochemically active materials for biogas reforming process. Fourier Transformed Infrared Spectroscopy was used to analyze a composition of outlet gases simultaneously with the tests of electrical parameters of a fuel cell. It allowed comparing a catalytic activity of fabricated materials towards internal biogas reforming. It was found that Cu and Co ceria co-doping improves electrical parameters of a fuel cell and enhances its long-term stability when compared with mono-doped ceria. This type of a material gives also the highest conversion rate of methane and the highest yield of carbon monoxide. •Nanocrystalline Co and Cu co-doped ceria was synthesized by reverse microemulsion method.•Fourier Transformed Infrared Spectroscopy was used to analyze a composition of outlet gases.•Cu and Co ceria co-doping improves long-term stability of a fuel cell.