In this work, porous complex and metal-free cathodes based on a (La0.6Sr0.4) (Cr0.5Mn0.5) O3 (LSCM) screen-printed backbone infiltrated with Ce0.9Gd0.1O2 (GDC) were fabricated for solid oxide electrolyzer cells. GDC infiltration has been optimized by structural and microstructural investigation and tested by electrochemical measurements in CO/CO2 mixtures. Infiltrated electrodes with a non-aqueous GDC solution showed the best electro-catalytic activity towards CO2 reduction, exhibiting a much lower polarization resistance, i.e., Rpol = 0.3 Ω·cm2 at 900 °C. The electrochemical performance of LSCM/GDCE in terms of Rpol is comparable to the best-performing Ni-YSZ cathode in the same operating conditions (Rpol = 0.23 Ω·cm2).

中文翻译：

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用于固体氧化物电解槽 (SOEC) 的基于 GDC 的渗透电极

在这项工作中，基于 (La0.6Sr0.4) (Cr0.5Mn0.5) O3 (LSCM) 丝网印刷骨架渗透有 Ce0.9Gd0.1O2 (GDC) 的多孔复合和无金属阴极被制造用于固体氧化物电解槽。GDC 渗透已通过结构和微观结构研究进行了优化，并通过 CO/CO2 混合物中的电化学测量进行了测试。具有非水性 GDC 溶液的渗透电极对 CO2 还原表现出最佳电催化活性，表现出低得多的极化电阻，即，在 900°C 下，Rpol = 0.3 Ω·cm2。LSCM/GDCE 在 Rpol 方面的电化学性能与相同操作条件下性能最佳的 Ni-YSZ 阴极相当（Rpol = 0.23 Ω·cm2）。