The intermediate - temperature sofc ( solid oxide fuel cell ) ’ s electrolyte with perovskite - type lsgm ( la _ ( 0 . 9 ) sr _ ( 0 . 1 ) ga _ ( 0 . 8 ) mg _ ( 0 . 2 ) o _ ( 3 - ) ) was synthesized using advanced pechini method and solidification method . the thermal and electrical properties of the sintered samples ( synthesized by two different methods ) were measured and compared by thermal expansion and ac impedance spectroscopy ; the phase transformation process and inner structure were measured and compared by xrd , dta - tg and ac impedance spectroscopy . the research results show that the electrolyte synthesized by advanced pechini method has several advantages , such as fine pre - powders , low sintering temperature , reduced or eliminated impurity phases and high conductivity etc . so , the apm is ideal method to synthesize lsgm 采用改进的柠檬酸法(以柠檬酸和edta乙二氨四乙酸为复合络和剂,柠檬酸为燃料)和固相法分别制备了具有钙钛矿结构的中温固体氧化物燃料电池的电解质材料lsgm ( la _ ( 0 . 9 ) sr _ ( 0 . 1 ) ga _ ( 0 . 8 ) mg _ ( 0 . 2 ) o _ ( 3 - ) ) ,用差热?热重分析( dta / tg ) 、 x光衍射分析( xrd ) 、交流阻抗谱技术( ac - impedancespectra ) 、比表面积分析( bet )和烧结收缩率曲线等手段对产物的热分解过程、物相转变和内部结构等进行了表征,并对由这些粉体烧结而成的固体氧化物燃料电池的电解质材料的电导率进行了检测。
