高等学校化学学报2018，Vol.39Issue(7)：1497-1502,6.DOI:10.7503/cjcu20170816
BMIMPF6离子液体中铜沉积的电化学行为
Electrochemical Behavior of Copper Electrodeposition in BMIMPF6 Ionic Liquid
孙杰 1明庭云 1钱慧璇 1张曼珂 1谭勇1
作者信息
- 1. 沈阳理工大学环境与化学工程学院,沈阳110159
- 折叠
摘要
Abstract
The ionic liquid(IL)1-butyl-3-methylimidazolium hexafluorophosphate(BMIMPF6)was synthesized by methylimidazol,chlorobutane and potassium hexafluorophosphate through two-step process.Then the electrochemical behavior of copper electrodeposition in BMIMPF6 IL was studied.The electrochemical oxidation and reduction process of copper ions were analyzed by cyclic voltammetry(CV)method,and the kinetic parameters and reversibility were also discussed.The nucleation and growth mechanism of copper on the substrate were investigated by chronoamperometry test.The micro-morphology and composition of the layer were characterized by scanning electron microscope(SEM),energy dispersire spectrometer(EDS)and X-ray diffractoneter(XRD).The results show that the redox of copper in the system is an irreversible process.The first stage of reduction is a reversible process and the third step in the second stage is an irreversible process,and the diffusion coefficient of this step is 3.743×10-6cm2/s.The electrocrystallization mechanism of copper in this system is three dimensional instantaneous nucleation growth controlled by diffusion.The copper layer is deposited in the form of graniphyric after nucleation.关键词
离子液体/铜/电沉积/循环伏安/形核机制Key words
Ionic liquid/Copper/Electrodeposition/Cyclic voltammetry/Nucleation mechanism分类
化学化工引用本文复制引用
孙杰,明庭云,钱慧璇,张曼珂,谭勇..BMIMPF6离子液体中铜沉积的电化学行为[J].高等学校化学学报,2018,39(7):1497-1502,6.
