【摘要】 首次利用现场表面增强拉曼光谱研究了Zn-Ni合金共沉积的机理。通过研究Ni电极在NiCl2溶液与纯水中的拉曼光谱、Ni电极与Au电极在KCl溶液中的拉曼光谱以及这2种电极在NiCl2溶液中现场电沉积的拉曼光谱,并根据前人提出的理论,得出如下结论:Zn-Ni合金共沉积中存在着较易在电极表面放电的NiClad,使Ni沉积的过电位降低,促进了Ni的沉积,导致Zn的异常共沉积。更多还原

【Abstract】 The mechanism of Zn-Ni alloy codeposition was studied firstly through in situ surface enhanced raman spectrum （SERS）. The SERS of Ni electrode in NiCl₂ solution and pure water, the SERS of Ni electrode and Au electrode in KCl solution and the in situ electrodeposition SERS of the two kinds of electrodes in NiCl₂ solution were discussed. On the basis of the theory put forward by predecessors, the fo-llowing conclusions were suggested: NiCl ad exists in the codeposition of Zn-Ni alloy, which is easy to discharge on the electrode surface, thus lowering the overpotential of Ni deposition, and as a result Ni deposition is promoted leading to the abnormal codeposition of Zn.更多还原