Solid oxide fuel cells (SOFCs) have been gaining increased attention in the energy sector. Commonly, yttria-stabilized zirconia is widely employed as commercial electrolyte, however, resulted in drawbacks such as high-temperature operating and low conductivity which negatively affect the durability and efficiency. Thus there are many efforts to find high-ionic conductors. From the point of manufacturing, the major difficulty of LaGaO₃-based electrolyte as a high-ionic conductor is its incompatibility with commercial Ni-based anodes during high-temperature processes as well as operating. Several interlayers have been introduced to prevent the reaction between LaGaO₃-based electrolyte and Ni-based anode. In this study, we investigate the optimal thickness of the La-doped CeO₂ (LDC) interlayer by the screen-printing method using La_0.9Sr_0.1Ga_0.8Mg_0.2O_3-δ for the commercial electrolyte supported SOFCs. As a result, the superior power performance of 2.2 W·cm⁻² at 1123 K is achieved through the optimized LDC thickness of 20 μm through not lab-scaled but commercial ceramic manufacturing processing.

固体氧化物燃料电池（SOFC）在能源领域受到越来越多的关注。通常，氧化钇稳定的氧化锆被广泛用作商业电解质，但是，导致诸如高温操作和低电导率的缺点，这不利地影响了耐久性和效率。因此，为找到高离子导体进行了许多努力。从制造的角度来看，作为高离子导体的基于LaGaO ₃的电解质的主要困难在于其在高温过程以及操作过程中与市售的基于Ni的阳极不兼容。已经引入了几个中间层以防止LaGaO ₃基电解质与Ni基阳极之间的反应。在这项研究中，我们研究了La掺杂CeO的最佳厚度对于工业电解质负载的SOFC，通过使用La _0.9 Sr _0.1 Ga _0.8 Mg _0.2 O _3- δ的丝网印刷方法在图₂（LDC）中间层上进行印刷。结果，通过非实验室规模的商业化陶瓷制造工艺，通过优​​化的20μmLDC厚度实现了在1123 K时2.2 W·cm ^-2的出色功率性能。