Demonstrates cation doping enhances CO<sub>2</sub> electrolysis performance, indicating a pathway for efficient carbon conversion.
Key Points
The research aims to improve CO<sub>2</sub> electrolysis efficiency by modulating oxygen activity through cation doping in solid oxide materials.
Employs solid oxide electrolysis cells (SOECs) for CO<sub>2</sub> to CO conversion.
Utilizes cation doping in Sr<sub>2</sub>Ti<sub>0.8</sub>Fe<sub>1.2</sub>O<sub>6-δ</sub> to create Sr<sub>2</sub>Ti<sub>0.8</sub>FeNi<sub>0.2</sub>O<sub>6-δ</sub> and Sr<sub>2</sub>Ti<sub>0.8</sub>FeCo<sub>0.2</sub>O<sub>6-δ</sub>.
Conducts advanced spectroscopic techniques and density functional theory calculations to analyze changes in oxygen activity.
Achieves a current density of 1.15 A cm<sup>-2</sup> and a CO production rate of 8.01 mL min<sup>-1</sup> cm<sup>-2</sup> with the STFC cathode.
Reports >99% Faradaic efficiency at 1.6 V and 800 °C.
Identifies increased oxygen activity due to Co doping, reducing energy barriers for CO generation.