Study of the Copper Electrodeposition on Titanium Electrodes

被引:3
作者
de la Rosa, F.
Ramos, A.
机构
来源
MES 25: ELECTROCHEMISTRY FOR ALTERNATIVE ENERGY SOURCES AND ENVIRONMENTAL IMPROVEMENT | 2010年 / 29卷 / 01期
关键词
NUCLEATION;
D O I
10.1149/1.3532313
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The electrodeposition of copper on titanium electrodes was investigated using cyclic voltammetry and a potential step technique in 5x10(-3) M CuSO4, 1M (NH4)(2)SO4 and pH values of 8, 9 and 10.3. Voltammetric analysis showed that the reaction is carried in two steps. The first corresponds to the reduction of Cu(NH3)(2+) to Cu(NH3)(2+), possibly controlled by electronic transfer. The second corresponds to the reduction of Cu(NH3)(2)(+) to Cu(0). The electrocrystallization mechanism and the coupled reactions are pH function. The overcrossing potential, E-c, remains constant, and may be related to the thermodynamic potential. The current transients confirmed nucleation and growth process. There is a possible kinetically controlled reaction occurring on the first Cu layer of the deposit or the Ti substrate and it will be confirmed on the later work by applying the appropriate model.
引用
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页码:155 / 161
页数:7
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