Copper-doped lanthanum ferrites for symmetric SOFCs. (15th June 2016)

• Record Type: Journal Article
• Authors: Zurlo, F.; Natali Sora, I.; Felice, V.; Luisetto, I.; D'Ottavi, C.; Licoccia, S.; Di Bartolomeo, E.
• Is Part Of: Acta materialia. Volume 112(2016)
• Page Start: 77
• Page End: 83
• Publication Date: 2016-06-15
• Subjects: Oxides -- Electrochemical impedance -- Fuel cells materials; Materials -- Periodicals; Materials science -- Periodicals; Materials -- Mechanical properties -- Periodicals; Metallurgy -- Periodicals; Chemistry, Inorganic -- Periodicals; 620.112
• DOI: 10.1016/j.actamat.2016.04.015
• Languages: English
• ISSNs: 1359-6454

Abstract

Abstract: Structure stability and electrical conductivity of La1-x Srx Fe0.8 Cu0.2 O3-δ with x = 0.2, 0.4 were investigated both in air and in hydrogen to explore their potential applications as symmetric electrodes for solid oxide fuel cells. La0.8 Sr0.2 Ga0.8 Mg0.2 O3-δ (LSGM) electrolyte supported symmetric fuel cells were fabricated and tested in air/hydrogen ambient in 650–800 °C temperature range achieving a maximum power density of 162 mW cm −2 . To improve the cell performance, a composite electrode (70 wt% La1-x Srx Fe0.8 Cu0.2 O3-δ −30 wt% Gd0.2 Ce0.8 O3-δ ) was successfully evaluated both at the anode and the cathode sides decreasing the cell polarization resistance to 0.454 Ω cm 2 at 800 °C and reaching a single cell maximum power density of 294 mW cm −2 . Graphical abstract: