固体氧化物电解池可以高效地将可再生能源电力转化为高价值化学品，是实现“碳中性循环”可持续发展的关键技术。本项目提出利用固体氧化物电解技术同步还原CO2和氧化C2H6脱氢制备化学品，发展一种阴离子掺杂的Fe基钙钛矿电极材料，实现到CO和C2H4的高效转化。利用固相反应等制备方法研制阴离子掺杂的材料，研究掺杂对制备条件、微结构和晶体结构的影响等；研究对电极材料的本征性质的影响，包括缺陷浓度、吸附性质、电子-离子电导机制、氧化学扩散能力和表面氧交换能力等；构建对称电池研究电极的电化学能，包括CO2还原和C2H6氧化脱氢的界面极化电阻及活化能等；进一步构建单电池，研究电解池的电化学性能和稳定性，包括极化性质、法拉第效率、转化率和产物的选择性，以及电池在恒压/恒流模式下电极的演变和反应产物的变化；最后对其反应机理做初步的探索。通过以上研究，研制出一种电导率、催化活性和稳定性均良好的新型电极材料。

Solid oxide electrolysis cell (SOEC) can efficiently convert renewable energy into high-value chemicals, which is the key technology to realize the sustainable development of "Carbon Neutral Cycle". This project proposes to use SOEC technology to reduce CO2 and oxidize C2H6 dehydrogenate simultaneously to prepare chemical raw materials. The efficient generation of CO and C2H4 will be realized by developing an anion-doped Fe-based perovskite oxide electrode material. The anion-doped materials will be prepared by using conventional ceramic fabrication processes such solid phase reaction method.Their preparation condition, microstructure and crystal structure of materials will be investigated. The effects of anion doping on the intrinsic properties of Fe-based perovskite will be systematically studied, including defect concentration, adsorption properties, electron-ion conductance mechanism, oxygen ion diffusion and surface oxygen exchange capacity. The electrochemical performance of the electrode will be evaluated based the constructed symmetrical cells, including the interface polarization resistance and activation energy of CO2 reduction and C2H6 oxidative dehydrogenation.Furthermore, SOEC single cell will be constructed and the electrochemical properties and stability will be evaluated, including polarization properties, Faraday efficiency, conversion rate and product selectivity, as well as the evolution of the electrode and product under constant voltage/constant current mode. Finally, the reaction mechanism will be preliminarily explored. Through the above research, a novel electrode material with good conductivity, catalytic activity and stability will be developed.