中高温质子导体的结构及性能研究进展

Research Progress in Structure and Properties of Medium-and High-Temperature Proton Conductors

中高温钙钛矿型质子导体具有较好的性能与应用前景.介绍了钙钛矿型质子导体的结构、性质和导电机理,概述了目前研究较多的几类质子导体,比较了各类质子导体的化学稳定性、强度及导电性能,叙述了质子导体的各种制备方法及表征手段,分析了不同组成对钙钛矿型氧化物质子导电性及稳定性的影响,说明提高材料性能的方法.阐述了国内外关于质子导体的最新研究成果,指出目前研究的重点为改进传统质子导体,开发新型质子导体,改进质子导体的制备工艺,以拓宽材料的工作温度,提高材料化学稳定性及电导率.

Medium-and high-temperature proton conductors with perovskite structure have got much attention due to their good application prospects. Some proton conductors were introduced, which have been mostly studied nowadays, and the structures, characteristics and electric conduction mechanism of perovskite-type 9roton conductors were described. The chemiea[ stability, strength and conductivity of all kinds of proton conductors were compared. The methods of preparation and characterization of proton conductors were also described. The effect of different doping elements on the proton conductivity and the stability of the perovskite-type oxides were analyzed, and the methods for improving the properties of proton conductors were summarized. The [atest research results both at home and abroad are introduced. The focal points of research were presented as improving the traditional proton conductors, developing new type proton conductors and improving the preparation technology, in order to improve the stability and conductivity and expand the work temperature range of proton conductors.