Manufacturing and testing of a metal supported Ni-YSZ/YSZ/La2NiO4 IT-SOFC synthesized by physical surface deposition processes

Abstract

Manufacturing and testing of a metal supported Ni-YSZ/YSZ/La2NiO4 IT-SOFC synthesized by physical surface deposition processes. (2017) Solid State Ionics, 310. 10-23.

Novel Composite Electrolytes of Zr0.92Y0.08O2-α(8YSZ)-Low Melting Point Glass Powder for Intermediate Temperature Solid Oxide Fuel Cells

“…The 8YSZ agglomerated with low melting point glass powder, few pores are observed and the microstructure is homogeneous after heating at 700 °C, which is attributed to high fluidity of molten glass. Figure 5 shows that the two components are evenly dispersed and intimately connected and do not react with each other due to their high chemical stability [3,5,9,11]. …”

“…ZrO 2 -based electrolytes doped, with rare earth metallic cations, are excellent oxide ionic conductors, and they are widely used in oxygen sensors and solid oxide fuel cells (SOFCs) [1,2,3,4] due to their good mechanical strength and high ionic transport numbers. During the past decades, continuous research concentrating on Y 2 O 3 -stabilized ZrO 2 (YSZ) has been done [5,6].…”

Ln 2 NiO 4+δ (Ln = La, Pr, Nd) coatings deposited by reactive magnetron sputtering as cathode material for intermediate temperature solid oxide fuel cell

“…The coatings are deposited by the co sputtering of Ln (Ln La, Nd, Pr) and Ni metallic targets under Ar O 2 atmo sphere where oxygen flow rate is controlled by the PEM system. Previous studies made with La 2 NiO 4 coatings prove that the K 2 NiF 4 structure is achieved for a La/Ni ratio close to 2 [24,29,30] after an appropriate annealing treatment. A similar behavior is observed for the different tested lanthanides.…”

“…[34]. Indeed, PEM is a very suitable technique that allows high rate growth of oxide coatings [24,32,33,37] in comparison to deposition of the same oxide under stable conditions [25,31]. As the main element of Ln 2 NiO 4 is Ln, the PEM control was performed on the La, Nd and Pr targets with a fixed 2.5 A discharge current in order to deposit coating with high sputtering rate without consuming too much the target.…”

“…Whereas thick layers deposited by wet deposition techniques are commonly used as cathodes in IT SOFCs, recent studies deal with the deposition of Mixed Ionic and Electronic Conductors (MIECs) thin layers by physical surface deposition processes [20e23]. Some other studies proved that a thin and dense cathode layer placed between the electrolyte and a porous cathode leads to the electrochemical performances enhancement due to the better cathode/electrolyte contact [24]. However, the use of a thin dense layer as SOFC cathode was not fully studied, but some researchers have began to work on this point [20].…”