A transitional layer is introduced between the La_0.75Sr_0.25Cr_0.5Mn_0.5O_3-δ˗Gd_0.1Ce_0.9O_1.95 (LSCM-GDC) cathode and the YSZ (8 mol% Y₂O₃ stabilized ZrO₂) electrolyte by a calcining-stripping-calcining method to improve the cell performance for CO₂ electroreduction. The effects of second calcination temperature and the LSCM/GDC weight ratio in the transitional layer are investigated to understand the role of the transitional layer. Experimental results reveal that the transitional layer is effective to decrease the cathodic polarization resistance. The cell performance increases with increasing the second calcination temperature in the temperature range of 800–1200 °C, but decreases at a higher second calcination temperature. The optimal performance is achieved at the second calcination temperature of 1200 °C and the LSCM/GDC weight ratio of 1:1 in the transitional layer. The current densities of the optimized cell with a transitional layer are improved by approximately 50% at various applied voltages compared to the cell without the transitional layer. Besides, based on the calculation results of distribution of the relaxation time and the experimental results, the performance improvement is related to the enhancement of the diffusion and exchange processes of the oxygen species at the three phase boundaries after the introduction of the transitional layer.

过渡层设置在拉之间引入_0.75锶_0.25铬_0.5锰_0.5 ø _3-δ GD _0.1铈_0.9 ø _1.95（LSCM-GDC）阴极和YSZ（8摩尔％Y ₂ ö ₃稳定的ZrO ₂）电解质由煅烧-剥离-煅烧方法以改善CO ₂的电池性能电还原。研究第二煅烧温度和过渡层中LSCM / GDC重量比的影响，以了解过渡层的作用。实验结果表明，过渡层可有效降低阴极极化电阻。在800–1200°C的温度范围内，电池性能会随着第二次煅烧温度的升高而增加，而在更高的第二次煅烧温度下，性能会下降。在过渡层中的第二次煅烧温度1200°C和LSCM / GDC重量比为1：1时，可获得最佳性能。与没有过渡层的电池相比，在不同的施加电压下，具有过渡层的优化电池的电流密度提高了约50％。除了，