【作者】 王晓铭； 张丽鹏； 于先进； 董云会； 李德刚； 梁寒冰； 葛志伟；

【Author】 Wang Xiaoming,Zhang Lipeng,Yu Xianjin~*,Dong Yunhui,Li Degang,Liang Hanbing,Ge Zhiwei(School of Chemical Engineering,Shandong Uninersity of Technology,Zibo 225091,China)

【机构】 山东理工大学化学工程学院；

【摘要】 本文合成新型室温离子液体[BMIM]HSO₄,恒电位法进行离子液体中铝的电沉积实验,并研究沉积过程中的电化学行为,以及不同电流密度对沉积层结构的影响。结果表明:离子液体[BMIM]HSO₄的电化学窗口较宽,适合作电解质;Al在Cu电极上可发生电沉积,-255mV发生Al的欠电位沉积,-590mV发生Al的体相沉积;Cu电极上Al的成核模式是介于三维瞬时成核和连续成核之间;沉积层的SEM图片表明沉积形貌受电流密度的影响,电流密度为70mA·cm^-2时,沉积层致密,附着力好。更多还原

【Abstract】 In this paper,we synthesized a new 1-butyl-3-methylimidazolium hydrogen sulfate[BMIM]HSO₄ room temperature ionic liquid,the electrodeposition experiments were finished by constant potential deposition method,and the electrochemical behavior of aluminium was examined during the process of electrodeposition, and also researched on micrographs of aluminium electrodeposits with different current density.As a result,cyclic voltammogram of pure ionic liquid suggested that[BMIM]HSO₄ has a wider electrochemical window,which could be used as electrolyte.The deposition process of aluminium on Cu substrates occurred the underpotential deposition at -255 mV,and the bulk deposition at -590 mV.Chronoam- perograms experiments showed that the electrodeposition of aluminium proceeds via an uncertain three-dimensional nucleation model.The morphology of crystalline was revealed by scanning electron microscopy, which was dependent on the current density.The dense and well high-adhesion aluminium deposits were also obtained at 70 mA·cm^-2.更多还原