固体氧化物燃料电池双钙钛矿型电极材料的研究进展

RESEARCH PROGRESS IN DOUBLE-PEROVSKITE AS ANODE MATERIALS FOR SOLID OXIDE FUEL CELLS

电极材料对固体氧化物燃料电池(solid oxide fuel cell,SOFC)工作特性具有重要影响。双钙钛矿型A2BB′O6氧化物材料由于具有较强的氧离子传输能力、较低的膨胀系数、良好的催化活性、较强的抗硫中毒和抗碳沉积能力,成为非常有发展潜力的SOFC电极材料,其双B位元素特征使材料具有更强的结构和性能可调节性。本文综述双钙钛矿型氧化物材料作为SOFC电极材料的最新研究进展,重点总结双钙钛矿型电极材料的结构稳定性、电子和离子电导率以及电催化活性,指出目前双钙钛矿电极材料存在的主要问题,并提出未来的主要研究方向。

Electrode materials have strong impact on operation performance of solid oxide fuel cells （SOFCs）. Due to the high trans-portation ability for oxygen ions,the low thermal expansion coefficient,good catalytic activity and high tolerance to sulfur poisoning and strong resistance against carbon deposition,the double-perovskite A2BB＇O6 oxide becomes a promising electrode material for the SOFCs. The double B-site characteristic in double-perovskite oxides has strong controllability on lattice structure and properties. In this paper,the recent progress on double-perovskite based electrode materials for SOFCs is reviewed. The emphasis focuses on their structure stability,electronic and ionic conductivity as well as catalytic activity. The main concerns about current double-perovskite based electrode materials are summarized and the main future research directions are proposed.