添加氧化物对NiFe_2O_4-0.5NiO阳极性能的影响  

Effect of oxides on the anodic performance of NiFe_2O_4-0.5NiO

作　　者：张丽君[1] 宁春艳[1] 王淑兰[1] 姚广春[2] 

机构地区：[1]东北大学理学院 [2]东北大学材料与冶金学院,沈阳110189

出　　处：《材料与冶金学报》2013年第2期128-131,共4页Journal of Materials and Metallurgy

基　　金：国家自然科学基金重点项目(50834001)

摘　　要：以NiO和Fe2O3为原料、V2O5、MnO2和TiO2为添加剂,采用固相法合成了NiFe2O4-0.5NiO.用X-射线衍射和扫描电子显微镜、液体浸渍法、维氏硬度计和交流阻抗研究了NiFe2O4-0.5NiO的组成、形貌、电导率和力学性能.添加1.5%的V2O5、MnO2和TiO2均对NiFe2O4-0.5NiO微观形貌晶粒产生细化作用.以MnO2为添加剂的NiFe2O4-0.5NiO的孔隙率、电导率和硬度均好于添加TiO2和添加V2O5的试样.In this paper NiFe2O4-0.5NiO anode was prepared by NiO and Fe2O3 as the raw materials(NiO∶ Fe2O3 = 1.5∶ 1) with V2O5,MnO2 and TiO2 as the additives.The effect of V2O5,MnO2 and TiO2 on the composition,morphology,porosity,hardness and conductivity of NiFe2O4-0.5NiO were investigated by means of XRD,SEM,the liquid immersion method,vickers hardness test and AC impedance methods.The morphology of NiFe2O4 with the addition of 1.5% of V2O5,MnO2 and TiO2 was improved.All the three additives refined the crystalline grain of NiFe2O4.For NiFe2O4-0.5NiO,the density,electrical conductivity and hardness of the samples with the addition of MnO2 were superior to those with the addition of TiO2 and V2O5.

关 键 词：NiFeO 添加剂 孔隙率 电导率 硬度 

分 类 号：O646.54[理学—物理化学]