电解液浓度对NiCo_2O_4超级电容器电极材料电化学性能的影响

Effect of Electrolyte Concentration on Electrochemical Performance of NiCo_2O_4 Supercapacitor Electrode Materials

探讨电解液浓度对NiCo_2O_4超级电容器电极材料电化学性能的影响.以泡沫镍为集流体,采用冷压压片法在10MPa压力下制备NiCo_2O_4超级电容器电极材料,通过CHI660E电化学工作站测试样品的循环伏安、恒流充放电和交流阻抗等电化学性能.研究结果表明:高浓度的KOH电解液有利于改善NiCo_2O_4超级电容器电极材料的电化学性能.

The effect of electrolyte concentration on electrochemical properties of NiCo2O4 supercapaitor electrode materials was investigated NiCo2O4 supercapaitor electrode materials were prepared by cold pressing sheer method under 10 MPa with nickel foam as the collecting fluid.The electrochemical properties of samples,such as cyclic voltammetry,constant current charge-discharge and AC impedance were tested by CHI660E electrochemical workstation.The result show that the high concentration of KOH electrolyte can improve the electrochemical properties of the electrode materials of NiCo2O4 supercapacitor.