水热法合成阴极粉体LaxSr1-xMnO3的研究

THE RESEARCH ON La_XSr_(1-X)MnO_3 CATHODE POWDER SYNTHESIZED BY HYDROTHERMAL METHOD

采用水热法合成了一系列不同化学计量配比的LaxSr1-xMnO3阴极粉体,并用XRD、SEM和电化学工作站分析设备等对粉体的晶体结构和微观形貌进行分析和表征。结果表明,当矿化剂KOH浓度为4-6mol/L,反应时间为50小时,温度为260-270℃时,能获得粒度均一具有典型钙钛矿结构的LaxSr1-xMnO3阴极粉体。

A series of LaxSr1-xMnO3 cathode powders were synthesized from materials mixed to different stoichiometric ratios by a hydrothermal method in this work.The crystal structure and microstructure of the powders were characterized by XRD,SEM and electrochemical analysis equipment.The results showed that LaxSr1-xMnO3 cathode powder of uniform size and typical perovskite structure can be obtained at the mineralizer KOH concentration of 4-6mol/L,reaction time of 50 hours and the temperature from 260-270 ℃.