基于固体氧化物电解池的高温电解技术在化学工业中的应用进展

Application progress of high-temperature electrolysis technology based on solid oxide electrolysis cell in chemical industry

基于固体氧化物电解池(SOEC)的高温电解技术对于我国实现碳减排、碳达峰以及碳中和目标具有重要意义,同时可实现CO_(2)资源化利用,产生巨大的环境效益和潜在的经济效益。介绍了SOEC用于高温电解制氢、高温电解CO_(2)以及高温电解其他气态小分子制备化工产品技术的研究进展,并对未来SOEC耦合化工合成工艺的发展进行了展望。基于SOEC的高温电解技术的实验室研究和中试研究已取得进展,但工业化应用还有待进一步开发。提升高温电解池的集成规模、运行效率和运行稳定性,都是亟需解决的重点和难点问题。

High-temperature electrolysis technology based on solid oxide electrolysis cell(SOEC)is of great significance for China to achieve carbon emission reduction,carbon peaking,and carbon neutralization goals.Meanwhile,it can realize the utilization of CO_(2),resulting in huge environmental and economic benefits.This paper introduces the research progress of SOEC for high-temperature electrolysis of hydrogen production,high-temperature electrolysis of CO_(2),and high-temperature electrolysis of other gaseous molecules to produce chemical products,and puts forward the prospect for the development of SOEC-coupled chemical synthesis technology.At present,high-temperature electrolysis technology has made considerable progress in the laboratory and pilot stage,while its large-scale industrial application has yet to be further developed.Improving the integration scale of high-temperature electrolysis cells,as well as improving the operating efficiency and stability,are the crucial problems that need to be solved urgently in this field.