Electrochemical behavior of LSCF/GDC interface in symmetric cell: An application in solid oxide fuel cells

Interfacial Enhancement by γ‐Al2O3 of Electrochemical Oxidative Dehydrogenation of Ethane to Ethylene in Solid Oxide Electrolysis Cells

“…[11] Xray photoelectron spectroscopy (XPS) spectra were collected to monitor the surface changes in infiltrated anodes.A st he g-Al 2 O 3 loading increases from 0t o 0.585 mg cm À2 ,t he signal of Al 2p (Supporting Information, Figure S8) increases gradually. [12] Interestingly,t he binding energies of Fe 2p (Supporting Information, Figure S9 A) and Co 2p (Supporting Information, Figure S9 B) shift positively, [13] while the binding energies of Ce 3d (Supporting Information, Figure S9 C) and Sm 3d (Supporting Information, Figure S9 D) stay unchanged, [14] indicative of strong interaction between the loaded g-Al ) reveal that the low-temperature oxygen desorption peak at about 200 8 8Cd isappears and the onset desorption temperature of oxygen species rises from 134 to 218 8 8Ca fter loading g-Al 2 O 3 onto the anode surface, [15] indicative of decreased amount of surface adsorbed oxygen species on the infiltrated anodes.H 2 -temperature-programmed reduction (H 2 -TPR) profiles (Supporting Information, Figure S12) demonstrate that the onset reduction temperature of the anodes infiltrated with g-Al 2 O 3 is elevated evidently, [16] suggesting that the oxygen mobility is reduced. Therefore, after the infiltration of g-Al 2 O 3 ,b oth the amount of surface adsorbed oxygen species and the oxygen mobility are decreased, which is probably due to the interaction between the g-Al 2 O 3 and LSCF.A st he surface adsorbed oxygen species is active for deep oxidation of ethane, [17] while the lattice oxygen is responsible for the catalytic conversion of ethane to ethylene, [18] the LSCF-SDC anodes infiltrated with g-Al 2 O 3 are expected to display high electrochemical ODE activities.…”

“…O 2 ‐temperature‐programmed desorption (O 2 ‐TPD) profiles (Supporting Information, Figure S11) reveal that the low‐temperature oxygen desorption peak at about 200 °C disappears and the onset desorption temperature of oxygen species rises from 134 to 218 °C after loading γ‐Al 2 O 3 onto the anode surface, indicative of decreased amount of surface adsorbed oxygen species on the infiltrated anodes. H 2 ‐temperature‐programmed reduction (H 2 ‐TPR) profiles (Supporting Information, Figure S12) demonstrate that the onset reduction temperature of the anodes infiltrated with γ‐Al 2 O 3 is elevated evidently, suggesting that the oxygen mobility is reduced. Therefore, after the infiltration of γ‐Al 2 O 3 , both the amount of surface adsorbed oxygen species and the oxygen mobility are decreased, which is probably due to the interaction between the γ‐Al 2 O 3 and LSCF.…”

Investigation on spray deposited BaCe0.7Zr0.1Y0.1Gd0.1O2.9 thin film for proton conducting SOFC

“…The BCZYG crystallites show preferred orientation along (002) plane. The crystallite size of BCZYG film annealed at 1000°C is 38.8 nm and is calculated from Scherrer formula [18] given in Eq. (1).…”

A Study on Synthesis and Characterization of Dy-Doped La0.6Sr0.4Co0.2Fe0.8O3−δ via the Coprecipitation Method

“…82-1958) was emerged besides of La 2 O 3 , SrCO 3 , Fe 3 O 4 , and Co 3 O 4 . e XRD pattern of the sample calcined at 700°S reveals that the perovskite LSCF (JCPDS card 82-1961) [13] was formed simultaneous with La 2 O 3 and a little amount of SrCO 3 as secondary phases. Presenting of La 2 O 3 and SrCO 3 as impurities have been reported in the synthesis process of LSCF powder in both coprecipitation [12,14] and sol-gel [15] methods.…”