电解质浓度对电沉积中枝晶分形生长的影响

将分形几何与电化学原理相结合,以Microsoft Visual C++6.0为平台,编程模拟了电解质浓度对点电极电沉积和喷射电沉积中枝晶分形生长的影响。采用圆形电解池点电极电沉积的方法,制备了不同浓度下的金属镍枝晶;以平行板金属镍为阳极,石墨板为阴极,用自行设计的试验设备研究了不同浓度时金属镍枝晶二维电沉积生长的行为特性,并分别与模拟结果进行比较。结果表明,电解质浓度变化对电沉积的影响与采用模型模拟所得的结果具有相似性,模拟的结果对电沉积枝晶的试验研究具有很好的指导意义,气泡对沉积产物的形貌影响显著。

Dendrite Growth in Electrodeposition at Various Concentration of Electrolyte

By applying fractal geometry to electrodeposition,the growth process of quasi-two-dimensional dendrite at various concentration of electrolyte with a point electrode and parallel plate anode is successfully simulated by Microsoft Visual C++6.0.The two-dimensional dendrites of Ni are manufactured at various concentration of electrolyte in a ring-shaped electrolysis tank.Using parallel plate Ni as anode and graphite plate as cathode,the growth characteristic of dendrite at various concentration of electrolyte is studied by jet-electrodeposition,and all the results of experiments are compared with the simulation results.The results show that the dendrites of Ni at various concentration of electrolyte obtained by the above systems are similar to the results of simulation.The simulation results can be used to direct the experimentations of dendrite electrodeposition.Our research also shows that the bubble has a great influence on dendrite growth.