中低温质子陶瓷燃料电池阴极研究进展  

Recent Development on Cathodes for Intermediate-and Low-Temperature Protonic Ceramic Fuel Cells

作　　者：龚文杰 徐康 夏娇娇 许阳森 陈宇 GONG Wenjie;XU Kang;XIA Jiaojiao;XU Yangseng;CHEN Yu(School of Environment and Energy South China University of Technology,Guangzhou 510006,China)

机构地区：[1]华南理工大学环境与能源学院,广州510006

出　　处：《硅酸盐学报》2024年第6期1917-1934,共18页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(22179039);中央高校基本科研业务费专项资金项目(2022ZYGXZR002)。

摘　　要：质子陶瓷燃料电池(PCFCs)以质子作为载流子,具有独特的导电机制,能够在中低温度(400~700℃)下高效地将燃料中的化学能转化为电能,是一种极具发展前景的发电装置。然而,由于氧还原反应动力学迟缓,导致极化电阻占整个电池电阻的比重较大,因此,发展高活性、稳定型阴极材料或结构,对提高PCFCs性能有着重要作用,这也是当前的研究热点。通常情况下,这些阴极材料应同时具有足够高的导电率、结构稳定性、电催化活性等。本文对近年来PCFCs领域研究较多的单钙钛矿、双钙钛矿、Ruddlesden–Popper钙钛矿、尖晶石等阴极材料做了总结,并对PCFCs阴极材料在运行过程中存在的问题进行分析,包括提高阴极材料的质子传输特性和优化电解质/电极界面等,最后强调了未来PCFCs高性能阴极的可能的发展方向,为PCFCs的阴极材料设计提供了有益的参考。Energy is a foundation and driving force for the progress of human civilization.It is vital to the national economy,people livelihood,national security,human survival,and development,which is crucial to promoting economic and social development.SOFCs have the advantages of an all-solid structure,high energy conversion efficiency,no need to use precious metal catalysts,easy-to-achieve modularization,flexible fuel types,etc.,which are widely used.As a kind of SOFC,protonic ceramic fuel cells(PCFCs)with protons as charge carriers have a unique conduction mechanism and can effectively convert chemical energy into electric energy at relatively low temperatures(i.e.,400−700°C).The feature that PCFCs can be operated at medium and low temperatures can effectively avoid a reaction between the cell components at high temperatures,making the microstructure more stable while extending the service life.Therefore,PCFCs have attracted recent attention.As one of the core components of PCFCs,the catalytic activity of the cathode is important to the electrochemical performance of PCFCs.The oxygen reduction reaction(ORR)at the cathode of PCFCs is a high-temperature driven process,and the dynamic reaction of ORR at the cathode side of PCFCs becomes slow as the operating temperature decreases and the polarization loss of the cathode increases,resulting in a sharp decline in the electrochemical performance of a single cell at lower temperatures.Therefore,the design of cathode materials with high catalytic activity and stability is one of the effective ways to achieve high-performance low-temperature PCFCs.However,the performance of PCFCs is highly dependent on the material structures of cathodes,which in principle should have sufficient electrical conductivity,structural stability,electrochemical catalytic activity,and durability.Many PCFCs cathodes with a variety of different air electrode structures are developed.This review represents the development on perovskite oxides,double perovskite oxides,RP perovskite oxides,and spinel o

关 键 词：质子陶瓷燃料电池 阴极材料 电催化活性 稳定性 

分 类 号：TM[电气工程]