固体氧化物燃料电池热应力失效研究进展

Development on Thermal Stress Failure of Solid Oxide Fuel Cells

固体氧化物燃料电池(SOFC)是一种高效率、燃料灵活、全固态的燃料电池,是世界各国竞相研究开发的重点.其长期在高温下运行,运行部件之间材料属性差异较大,内部不可避免产生的热应力引起的部件损坏失效问题比较严重,严重阻碍其商业化应用.SOFC的热力失效问题不同尺度下有不同的表现形式和机理,本文从电堆、单电池和电极多个尺度综述了目前国内外学者相关的研究工作和进展,并对此做出评述和展望,提出了未来值得进行的研究内容,为SOFC热力失效问题的研究提供指导.

Solid oxide fuel cell(SOFC)is a high-efficiency,fuel-flexible,all-solid-state fuel cell,which is the focus of competing research and development around the world.It operates at a high temperature for a long time,and the material properties of the running components are quite different.The problems of component damage and failure caused by the inevitable internal thermal stress severely affect its commercial application.The thermal failure of SOFC has different manifestations and mechanisms in different scales.This review summarized recent work on the stack,single cell and electrode.The corresponding comments and suggestions in this field were given.This review could provide a guidance for studies on the thermal failure problems of SOFCs.