钴酸锰/泡沫镍复合电极材料的制备及其电化学性能研究

Fabrication of MnCo_2O_4/nickel foam electrodes and the investigation of their electrochemical properties

利用两步法成功制备出两种MnCo_2O_4纳米等级结构材料,研究了其电化学性能。结果证实得到的纳米片为MnCo_2O_4纳米等级结构,并均匀生长在泡沫镍基底上,电化学性质测试表明,这种纳米片/泡沫镍复合电极表现出优异的电化学性质。这种优异的性质与介孔的Mn Co2O4纳米片这一新颖的结构有密切的关系,5 A/g时的比电容值高达475 F/g。MnCo_2O_4/泡沫镍复合材料是一种非常有潜力的超级电容电极材料,MnCo_2O_4纳米材料结构和形貌对超级电容器电极材料的电化学性质有较大的影响。

Two kinds of MnCo2O4 hierarchical structures were uniformly grown on Ni foam via a facile two-step method. These electrode materials were directly used as the integrated electrode for supercapacitors. The electrochemical properties were investigated. These MnCo2O4/Ni foam electrodes exhibit ultrahigh capacitance because of these unique nanostructures. The specific capacitance value is 475 F/g at current density of 5 A/g. The structure and morphology of MnCo2O4 nanomaterials play an important role in the electrochemical performance of the supercapacitor materials and the MnCo2Oa/Ni foam electrode could be a great potential material for the supercapacitor in industry.