新型氧离子导体La2Mo2O9的研究进展  

Research progress of a new type of oxide-ion conductor La_2Mo_2O_9

作　　者：朱美安[1] 王洪涛[1] 韩燕[1] 吴福芳[1] 盛良全[1] 

机构地区：[1]阜阳师范学院化学与材料工程学院,安徽环境污染物降解与监测省级重点实验室,阜阳236037

出　　处：《化工新型材料》2017年第3期25-27,共3页New Chemical Materials

基　　金：国家自然科学基金青年项目(51402052、21602029);安徽省省级研究项目(KJ2016A548、2015zy037、zdyj-0081);四川省重点实验室开放课题(hx2015005)

摘　　要：钼酸镧(La_2Mo_2O_9)是一种新型氧离子导体,具有电导率相对较高,制备温度较低等优点,广泛应用于多种电化学装置系统中。分别从结构与传导机理、制备方法、导电性能及展望4个方面综述了钼酸镧基电解质的研究进展。着重阐述了相变抑制、内耗-温度谱、LPS(Lone Pair Substitution)理论等在钼酸镧基电解质传导机制方面及固相反应法、溶胶-凝胶法、冷冻干燥法等在制备钼酸镧基电解质方面的最新研究成果。同时阐述了钼酸镧基电解质作为一种优良的氧离子导体,在氧泵、浓差电池、燃料电池等方面的性能。La2Mo2O9is a new type of oxide-ion conductor.It exhibit high conductivities and low synthesis temperature which make them be used in various electrochemical systems.The research progress of La2Mo2O9-based electrolytes,from their transference mechanism,structure,preparation methods,electrochemical properties and their prospects were presented.The latest achievements on the transference mechanism such as phase change suppression,internal friction versus temperature spectrum,LPS（Lone Pair Substitution）theory,meanwhile,for the preparation method such as solid state reaction,sol-gel method and freeze-dried precursors method were also explained in detail.Furthermore,La2Mo2O9-based electrolytes have utilized in numerous electrochemical processes such as oxygen pump,concentration cell and fuel cell etc.

关 键 词：La2Mo2O9 电解质 电池 电导率 

分 类 号：TQ133.3[化学工程—无机化工]