超级电容器电极材料纳米Fe_3O_4的制备及其性能研究  

Preparation and characterization of Fe_3O_4 nanoparticles used as electrode materials for supercapacitor

作　　者：李玉佩[1] 李景印[1] 赵北征[1] 李昌家[1] 

机构地区：[1]河北科技大学理学院,河北石家庄050018

出　　处：《河北科技大学学报》2011年第6期558-562,共5页Journal of Hebei University of Science and Technology

基　　金：河北科技大学校立科研基金资助项目(XL200872;XL200908)

摘　　要：采用化学共沉淀法制备了纳米Fe3O4,系统考察了n(Fe3+)∶n(Fe2+)、反应pH值、熟化温度等对纳米Fe3O4生成的影响,从而确定最佳反应条件。将纳米Fe3O4应用到超级电容器上,研究了其作为电容器电极材料的电化学性能。结果表明:在最佳反应条件下,制备出的纳米Fe3O4的晶体结构完整;经电化学性能测定,Fe3O4作为电极材料的工作电压为0.4V,在电流密度为1mA/cm2时比电容达24.3F/g。The Fe3O4 nanoparticals were prepared by chemical co-precipitation method. The effect of process factors such as the ratio of Fe^3＋ and Fe^2＋ , the pH value, and the temperature of crystallization on Fe3 O4 nanoparticals were investigated, and then the optimum preparation conditions were determined. The prepared Fe304 nanoparticals, used as electrode materials for supercapacitor, were also detected through electrohemical performance tests. The results show that the products are well-crystallized Fe3O4 nanoparticles under optimum conditions. As electrod material, the operating voltage of Fe3O4 is 0.4 V. Itsspecific capacitance is 24.3 F/g at current density of 1 mA/cm2.

关 键 词：纳米FE3O4 超级电容器 电极材料 比电容 

分 类 号：TM53[电气工程—电器]