CeO2-based thin-film electrolyte membranes for intermediate temperature SOFCs: Direct electrophoretic deposition on the supporting anode from additive-modified suspensions

Performance Enhancement of Ce0.8Sm0.2O1.9-Supported SOFC by Electrophoretic Formation of Modifying BaCe0.8Sm0.2O3 and Ce0.8Sm0.1Pr0.1O1.9 Layers

“…However, it should be noted that the OCV values for the SDC1 cell, which ranged 0.81–0.71 V at 650–800 °C, were close to those typical for the SDC electrolyte without barrier layers [ 64 , 65 ], while in the case of the thin-film SDC, the application of the BCS-CuO barrier layer resulted in the significant increase in the OCV level up to 1.05–0.95 V at temperatures of 600–700 °C [ 28 ]. A similar effect of increasing OCV was observed when SDC thin-film electrolyte membranes were deposited on the supporting Ni-cermet anode with a proton-conducting electrolyte in its content (1.047–1.004 V at 600–700 °C for SDC (30 μm) on Ni-BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3−δ [ 66 ]; 1.06–0.92 V at 650–750 °C for SDC (30 μm) modified with Co, Ti, and Al sintering additives on the supporting Ni-BCS anode [ 67 ]). The specific power of the SDC2 cell with both the BCS-CuO anode barrier layer and the PSDC cathode layer reached 159–419 mW cm −2 at temperatures of 650–800 °C, respectively, and was significantly higher than that of the SDC1 cell.…”

“…The electrolyte membranes obtained by EPD have been marked. 650) 505 (700) [49] NiO-BCS/SDC modified TiO 2 (30)/Pt (EPD) 920 ( 750) 125 (750) [67] The analysis of the spectra obtained under the open circuit conditions made it possible to determine the R hf value (series resistance) as an inflection point in the impedance spectrum on the Nyquist diagram between its high-frequency part (electrolyte contribution) and mid-low frequency part (electrode contribution). The R η values, corresponding to the total polarization contribution of the electrodes, were derived from the measurements of the total cell resistance under dc current, R dc , as R η = R dc − R hf .…”

Recent advances in electrophoretic deposition of thin-film electrolytes for intermediate-temperature solid oxide fuel cells

“…One of the important tasks in the implementation of the electrophoretic deposition of solid electrolytes on porous substrates is to achieve the lowest possible coating sintering temperature in order to preserve the porous structure of the electrode and its high electrochemical activity at a reduced operating temperature. In the study performed by Kalinina&Pikalova group [160], to enhance sintering properties of SDC films, directly deposited on highly porous non-conductive NiO-BaCe0.8Sm0.2O3 (BCS) and NiO-SDC substrates, introducing Co3O4, TiO2, and Al2O3 oxides in the amount of 2, 2 and 5 mol. % was used.…”