【作者】 张启波； 华一新； 李艳； 徐存英； 李坚；

【Author】 Zhang Qibo~*,Hua Yixin,Li Yan,Xu Cunying,Li Jian(Key Laboratory of Ionic Liquids Metallurgy,Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China)

【机构】 昆明理工大学冶金与能源工程学院,离子液体冶金重点实验室；

【摘要】 采用循环伏安和计时安培法研究铜电极上吡啶基离子液体对铜的电沉积初期电结晶形核和生长行为的影响。结果表明,铜的电沉积过程经历了晶核形成过程,其电结晶按瞬时形核和三维生长方式进行。吡啶基离子液体的加入对铜的电沉积具有阻化作用,使得铜的电结晶由瞬时形核向连续形核的三维生长方式转变。更多还原

【Abstract】 The nucleation and the first stage of the growth of copper on copper electrode in the absence and presence of alkylpyridinium ionic liquids as additive were investigated using cyclic voltammetry and chronoamperometric current-time transients techniques.The results showed that the copper deposition can be interpreted by a model involving instantaneous nucleation with hemispherical diffusion controlled growth of nuclei.The addition of alkylpyridinium ionic liquids induced a blocking effect on the copper electrocrystallization process through its cathodic adsorption on the electrode surface. This effect led to a change of the instantaneous nucleation mechanism toward more progressive one.更多还原