摘要
La2Mo2O9是一种具有高离子导电性的新型氧离子导体,其氧离子电导率在1073K时高达0.06S/cm,与YSZ在1273K时的电导率相当。这种高的离子导电性使它在中温固体氧化物燃料电池、氧传感器、透氧膜、固态离子器件等领域有着重要的潜在应用前景。本文从La2Mo2O9的结构、性质、氧离子扩散机理及其掺杂改性4个方面综述了近年来La2Mo2O9基固体电解质的研究热点和新进展,为该固体电解质材料的研究提供了有价值的信息。
La_2Mo_2O_9 is a novel type of oxide-ion conductor with high oxide-ion conductivity.Its conductivity is about 0.06 S/cm at 1 073K,which is comparable to that of yttria-stabilized zirconia at 1 273K.Consequently,it has potential applications in intermediate-temperature solid oxide fuel cells,oxygen sensors,oxygen permeable membrane,solid-state ionic devices,etc.In this paper,the recent research progresses regarding the structure,properties,doping,diffusion mechanism of oxide-ion in La_2Mo_2O_9 crystal are reviewed.Valuable information is provided,which will be beneficial for the future research on these oxide-ion solid electrolytes.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2010年第1期44-50,共7页
Progress in Chemistry
基金
国家自然科学基金项目(No.50604002)资助
