Ce_0.9Gd_0.1O_1.95 (CGO) protective layers are prepared by two different methods to prevent the reaction between the Zr_0.84Y_0.16O_1.92 (YSZ) electrolyte and the La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ (LSCF) cathode. In the first method, the CGO layers are deposited by an airbrushing technique from an ink containing CGO particles without and with cobalt as sintering aids. The second strategy consists in preparing both a dense CGO barrier layer and a porous LSCF cathode by spray-pyrolysis deposition, in order to further reduce the fabrication temperature and minimize the reaction between the cell components. The samples prepared by spray-pyrolysis exhibit better performance and durability than those obtained by conventional sintering methods. The results suggest that the interfacial reactivity between YSZ and LSCF as well as the Sr-enrichment at the cathode surface can be avoided by using low-temperature fabrication methods and by operating at temperatures lower than 650 °C.

通过两种不同的方法来制备Ce _0.9 Gd _0.1 O _1.95（CGO）保护层，以防止Zr _0.84 Y _0.16 O _1.92（YSZ）电解质与La _0.6 Sr _0.4 Co _0.2 Fe _0.8 O3 _{-δ之间的反应}（LSCF）阴极。在第一种方法中，CGO层是通过喷枪技术从含有CGO颗粒的油墨中沉积而来的，而CGO颗粒中则没有钴，也没有钴。第二种策略是通过喷雾热解沉积制备致密的CGO阻挡层和多孔的LSCF阴极，以进一步降低制造温度并使电池组件之间的反应最小化。通过喷雾热解制备的样品表现出比通过常规烧结方法获得的样品更好的性能和耐久性。结果表明，通过使用低温制造方法和在低于650°C的温度下运行，可以避免YSZ和LSCF之间的界面反应性以及阴极表面的Sr富集。