Solid Oxide Electrolysis Cells offer great promise for efficient recycle and cost-effective conversion of carbon dioxide. However, the conventional Ni/YSZ and some other fuel electrodes suffer some technological limitations such as the use of protecting gas CO/H₂. Here we demonstrate the efficient electrochemical reduction of carbon dioxide without flowing any protecting gases based on the porous cathode with La_0.3Sr_0.7Ti_0.3Fe_0.7O_3-δ(LSTF) nanostructured composite which is infiltrated into a scandia-stabilized zirconia scaffold together with ceria. The infiltrated porous electrode provides excellent performance for CO₂ electrolysis. By I–V measurement and electrochemical impedance spectroscopic characterization, it shows that the current densities during electrolysis below a cell voltage of 2 V is between 1.20 and 4.44 A cm⁻², increasing with temperature increase over the temperature range of 700–850 °C, and the cell with configuration of LSTF/CeO₂|ScSZ|LSM/ScSZ possesses low electrode polarization resistances (R_p) within different voltage ranges, for example, R_p = 0.18 Ω cm² at an applied voltage of 2.0 V, which is one order of magnitude lower than other reported electrode materials such as La_0.2Sr_0.8TiO_3+δ. Moreover, a combination of short-term stability test for 48 h and cyclic stability test of LSTF^/CeO₂ are also estimated, and the results show that the nanostructured LSTF/CeO₂ is highly effective for CO₂ electrolysis.

固体氧化物电解池为二氧化碳的高效回收利用和具有成本效益的转化提供了广阔前景。然而，常规的Ni / YSZ和一些其他燃料电极受到一些技术限制，例如使用保护气体CO / H ₂。在这里，我们证明了基于La _0.3 Sr _0.7 Ti _0.3 Fe _0.7 O3 _-δ（LSTF）纳米结构复合材料的多孔阴极可以有效地电化学还原二氧化碳，而不会流入任何保护气体，该复合材料渗入与scan稳定的氧化锆支架以及氧化铈。渗透的多孔电极为CO ₂电解提供了优异的性能。由IV测量和电化学阻抗谱表征，结果表明，在2 V电池电压以下的电解过程中，电流密度在1.20至4.44 A cm ^-2之间，并且在700–850°C的温度范围内随温度的升高而增加具有LSTF / CeO _2的结构| ScSZ | LSM / ScSZ在不同的电压范围内具有较低的电极极化电阻（R _p），例如在施加电压2.0 V时R _p  = 0.18Ωcm ²，约为一个数量级。幅度低于其他报告的电极材料，例如La _0.2 Sr _0.8 TiO _{3 +δ}。此外，还评估了48h的短期稳定性测试和LSTF ^/ CeO _2的循环稳定性测试的组合，结果表明，纳米结构的LSTF / CeO ₂对CO ₂电解非常有效。