摘要
金属支撑型固体氧化物燃料电池具有启动速度快、机械强度高、成本低廉等优点,在移动领域和固定式发电系统具有极大的应用前景。Fe-Cr合金因良好适配性和高性价比成为常用的金属支撑体材料,然而其在高温工况下氧化腐蚀、元素互扩散、与陶瓷发电层热膨胀系数不匹配等问题影响电池的输出性能和长期稳定性。本综述主要归纳了Fe-Cr支撑体性能的影响因素和改性方法,首先介绍了常用材料的特点以及决定热膨胀系数的关键因素,讨论了金属支撑体的高温力学性能及其调控手段,分析了支撑体结构设计对电池输出性能的影响;然后总结了制备工艺与多孔支撑体微观组织的关系,阐述了Fe-Cr金属支撑体氧化行为和元素扩散问题及其解决措施。最后展望了Fe-Cr金属支撑体存在问题和发展趋势,为高功率、长寿命电池研发优化提供思路。
Metal-supported solid oxide fuel cells have great application potential prospects in mobile fields and fixed power generation systems due to its advantages of fast start-up speed,high mechanical strength and low cost.Fe-Cr alloy has become a commonly used metal support mate-rial because of its good adaptability and high-cost performance.However,its oxidation corrosion,element inter-diffusion and thermal expansion coefficient mismatch with the ceramic power generation layer under high-temperature conditions affects the output performance and long-term stability of the cell.This review concentrates on the factors and modification methods that affect the performance of Fe-Cr supports.Firstly,the cha-racteristics of commonly used materials and the key factors that determine the thermal expansion coefficient are introduced.The high-temperature mechanical properties of metal supports and their regulation are discussed.The influence of support structure design on cell output performance is analyzed.Then,the relationship between the preparation process and the microstructure of the porous support is summarized.The oxidation behavior and element inter-diffusion problems of Fe-Cr metal supports are discussed,and the specific solutions are summarized.Finally,the current problems and future development trends of Fe-Cr metal supports have been prospected to provide references and ideas for the research and development of high-power and long-life SOFCs.
作者
朱志刚
宋琛
董东东
刘太楷
文魁
邓畅光
宁洪龙
刘敏
ZHU Zhigang;SONG Chen;DONG Dongdong;LIU Taikai;WEN Kui;DENG Changguang;NING Honglong;LIU Min(School of Materials Science and Engineering,State Key Laboratory of Luminescent Materials and Devices,South China University of Technology,Guangzhou 510641,China;Institute of New Materials,Guangdong Academy of Sciences,National Engineering Laboratory of Modern Materials Surface Engineering Technology,Guangdong Provincial Key Laboratory of Modern Surface Engineering Technology,Guangdong-Hong Kong Joint Laboratory of Modern Surface Engineering Technology,Guangzhou 510650,China;International School of Microelectronics,Dongguan University of Technology,Dongguan 523808,Guangdong,China)
出处
《材料导报》
北大核心
2025年第20期138-147,共10页
Materials Reports
基金
国家重点研发计划(2023YFE0108000)
国家自然科学基金(52201069)
中国科协青年人才托举项目(2022QNRC001)
广东省科学院项目(2022GDASZH-2022010201,2022GDASZH-2022010203-003,2022GDASZH-2022030501-06)
广东省科学院新材料研究所专项资金(2023GINMZX-202301020104)
广东省科技计划(2023B1212060045,2023B1212120008)。
