Solid oxide electrolysis cell (SOEC) is a device that can efficiently convert excessive power of renewable energy, such as wind or solar energy into chemical energy. High temperature CO₂ electrolysis based on solid oxide electrolysis cell has been proved as an effective method to produce sustainable fuels and reduce greenhouse emissions. The performance of cathodes as the place where the electrolysis reaction takes place for fuel gas affects the efficiency of SOEC, whereas traditional cathodes show relatively low catalytic activity towards CO₂ electrolysis. In recent years, in addition to the optimization of traditional Ni‐based cathodes, the research on perovskite cathodes with better redox stability has been carried out rapidly. In this paper, the development of different cathodes of solid oxide electrolysis cell used for CO₂ electrolysis is summarized, from the study of new materials with different doping ratios for CO₂ electrolysis, to the microstructure optimization of electrode. It was found, that both durability and catalytic activity for the cathode materials could significantly improve the performance of single cells of SOEC. Finally, more prospects for future research work are put forward.

中文翻译：

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不同阴极的固体氧化物电解槽CO2电解的研究进展▴

固体氧化物电解池（SOEC）是一种可以将过量的可再生能源（例如风能或太阳能）转化为化学能的装置。基于固态氧化物电解池的高温CO ₂电解已被证明是生产可持续燃料和减少温室气体排放的有效方法。阴极作为燃料气体发生电解反应的场所的性能会影响SOEC的效率，而传统的阴极对CO _2的催化活性相对较低电解。近年来，除了优化传统的镍基阴极外，还对氧化还原稳定性更好的钙钛矿阴极进行了快速研究。本文综述了用于CO ₂电解的固体氧化物电解槽的不同阴极的发展，从对CO ₂电解不同掺杂比的新材料的研究到电极的微观结构优化。已经发现，阴极材料的耐久性和催化活性都可以显着改善SOEC单电池的性能。最后，为未来的研究工作提出了更多的前景。