黄长石Pr_(1+x)Sr_(1-x)Ga_3O_(7+0.5x)氧离子导体的制备及电性能研究  

Synthesis and Electrical Conductivity of Melilite-Type Electrolytes Pr_(1+x)Sr_(1-x)Ga_3O_(7+0.5x)

作　　者：王节华 王彦辉 周立佳 杨小燕 Wang Jiehua, Wang Yanhui, Zhou Lijia, Yang Xiaoyan(College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, Chin)

机构地区：[1]桂林理工大学材料科学与工程学院,广西桂林541004

出　　处：《广东化工》2018年第14期3-6,共4页Guangdong Chemical Industry

摘　　要：本文通过高温固相法成功合成了黄长石型Pr_(1+x)Sr_(1-x)Ga_3O_(7+0.5x) (x=0-0.4)氧离子导体材料,并对该固溶体材料进行了交流阻抗测试。结合静态晶格模拟计算数据,确定了材料的间隙氧缺陷生成能,从能量角度成功解释了含间隙氧缺陷Pr_(1+x)Sr_(1-x)Ga_3O_(7+0.5x) (x=0-0.4)氧离子导体稳定存在的可能性。材料在固态氧化物燃料电池、氧传感器等领域具有潜在应用。The melilite-type oxygen ion conductors of Pr1＋xSr1-xGa3O7＋0.5x were synthesized by solid state reaction method. The alternating current impedance for solid solution materials was measured. What＇s more, the interstitial oxygen defect formation energy was calculated by static lattice simulation calculation, it demonstrated that the interstitial oxygen defects in PrSrGa3O7-base oxygen ion conductor can be generated from the perspective of energy. The results indicated that Pr1＋xSr1-xGa3O7＋0.5x had potential applications such as in Solid Oxide Fuel CelIs（SOFCs）, Oxygen sensor etc.

关 键 词：氧离子导体 黄长石 氧缺陷生成能 

分 类 号：TM24[一般工业技术—材料科学与工程]