中文摘要：

研制兼有优良的导电性能和合适的热膨胀性能的阴极材料是中温固体氧化物燃料电池（SOFC）发展中的关键问题之一。本论文阐述了近年来中温SOFC阴极材料的发展，介绍了新型阴极材料La2NiO4＋δ混合导体的合成与制备和性能方面的研究，并对中温SOFC阴极材料的研究方向进行了探讨。

英文摘要：

Developing intermediate temperature solid oxide fuel cell （SOFC） has drawn growing attention in the past decades because of their high efficiency and environmental advantages. Cathode is a key component of intermediate temperature SOFC, plays an especially important role in the performance of intermediate temperature SOFC. This paper describes the development of several novel cathode materials for intermediate temperature SOFC, including Ln0.6r0.4Fe0.8CO0.2O3-δ （Ln=La, Pr, Nd, Sm）, Ln0.6r0.4Fe0.8CO0.2O3-δ, LSFC-SDC composite cathode and La2NiO4＋δ mixed conductor with K2NiF4 structure. These materials provide satisfying electrical conducting properties and acceptable thermal expansion coefficient values, and have potential of being applied as cathode of intermediate temperature SOFCs.