化学工程2026，Vol.54Issue(1)：26-32,7.DOI:10.3969/j.issn.1005-9954.2026.01.005
无空气吹扫环境下固体氧化物电解堆CO2电解的衰减机理
Degradation analysis of SOEC stack for CO2 electrolysis without air
摘要
Abstract
The performance and degradation mechanisms of a solid oxide electrolysis stack were investigated during CO2 electrolysis without air.The real-time voltage variations of individual repeat units were monitored through voltage leads inside the stack.The results demonstrate that after 1 000 h operation,the voltage of overall stack decreases by 1.77%,and two repeat units decreases by 1.98%and 1.76%,respectively.The microstructural analysis reveals that the formation of a new barrier layer SrCrO4,at the interface between metallic interconnects and cell current collectors in the repeat units,resulting in an increase of interfacial contact resistance.Additionally,microcracks appear at the grain boundaries of electrolyte in the electrolysis cell,which is another major reason to the degradation of the electrolysis cell.However,due to the reliability of the flat-tube electrolysis cell structure,the overall performance of the electrolysis stack remains relatively stable even in the absence of air blowing,providing a reference for its application in specialized environments.关键词
平管型/电解堆/CO2/无空气/固体氧化物电池Key words
flat-tube/electrolysis stack/CO2/without air/solid oxide cell分类
能源科技引用本文复制引用
武安祺,韩贝贝,钟小慧,王飞,官万兵..无空气吹扫环境下固体氧化物电解堆CO2电解的衰减机理[J].化学工程,2026,54(1):26-32,7.基金项目
人因工程全国重点实验室基金资助项目(HFNKL2023WN09) （HFNKL2023WN09）
