阳极电流密度对电镀镍阳极溶解性能的影响

Effect of Anode Current Density on Dissolution Properties of Electroplated Nickel Anode

为了控制和改善电镀镍阳极的溶解性能,减少工业镍阳极产生的残渣量,提高生产效率,采用电化学工作站和扫描电子显微镜等手段研究了镍阳极在瓦特镍液中的阳极极化曲线、不同阳极电流密度下的电位-时间曲线、阳极电流效率、溶解形貌和残渣率。实验结果表明:阳极电流密度控制在0.75~1.25 A/dm^2范围内,槽电压较稳定,电流效率高,镍溶解均匀,残渣率较低。

In order to control and improve the solubility of the electroplated nickel anode,reduce the amount of industrial nickel anode residue and increase production efficiency,the anodic polarization curves of nickel anodes in Watt nickel solution,potential-time curve at different anode current densities,current efficiency,dissolution morphology and residue rate of nickel anodes were investigated by means of electrochemical workstations and scanning electron microscopy.The experimental results showed that the anode current density was controlled within the range of 0.75-1.25 A/dm^2,the cell voltage was stable,the current efficiency was high,nickel was dissolved uniformly,and the residue rate was low.