Performance of strontium- and magnesium-doped lanthanum gallate electrolyte with lanthanum-doped ceria as a buffer layer for IT-SOFCs

Improved sintering and electrical properties of La-doped CeO2 buffer layer for intermediate temperature solid oxide fuel cells using doped LaGaO3 film prepared by screen printing process

“…10a). It should be noted that the observed OCV and MPD are higher than previous data [9,[13][14][15][16]. This implies that a high performance can be obtained with an anodesupported SOFC using the 1 wt.% LSGM-LDC buffer and LSGM electrolyte films prepared by screen printing, and the buffer layer effectively works for preventing the formation of a resistive phase between the anode and the LSGM electrolyte film.…”

“…Therefore, it would be possible to fabricate both LSGM electrolyte and LDC buffer layer on Ni-containing anode supports by wet processes followed by co-sintering. However, only a few results have been reported for the cell performance using anode-supported LSGM electrolyte films prepared by the conventional wet process [11,[13][14][15][16]. This may be due to the fact that sintering LDC is rather difficult, and its electrical conductivity is lower than that of LSGM [21][22][23][24][25].…”

A new nickel–ceria composite for direct-methane solid oxide fuel cells

“…The ceria also showed good catalytic activity for some other reactions, such as thermochemical dissociation of CO 2 and H 2 O to CO and H 2 at elevated temperatures by using a solar cavity-receiver reactor [18]. In addition to being used as part of the anode, cathode or electrolyte in SOFCs, doped ceria has also been widely used as a buffer layer between anode and electrolyte layers to avoid unwanted chemical reactions between them at elevated temperatures [19,20].…”

Performance and short-term stability of single-chamber solid oxide fuel cells based on La0.9Sr0.1Ga0.8Mg0.2O3−δ electrolyte

“…A SDC buffer layer was deposited via screen printing on a side of a pellet. According to previous works [13,14], both pellets with and without a buffer layer were then sintered in air at 1400 C for 5 h. Final disks presented a diameter of 12 mm and a thickness of 200 mm. For anode preparation, an ink was prepared from a powder mixture of NieSDC (70e30 wt.%) and a commercial resin.…”

“…Several works have demonstrated good cell performances using LSGM as electrolyte. Dokyol Lee et al [14] obtained a performance of 664 mW cm À2 at 800 C, using La 0. 8 between the electrolyte and the two electrodes, which achieved a power density as high as 1.4 W cm À2 at 800 C. Despite these advantages, LSGM is not widely used as electrolyte for SOFCs, as it may present important chemical reactions with electrodes.…”