【摘要】 低共熔溶剂（DES）是一种新型绿色溶剂，具有制备简单、电化学窗口宽和导电性好等优点.本文中对氯化胆碱-乙二醇（ChCl-EG）低共熔溶剂中Ag的电沉积行为进行研究，利用拉曼光谱和FTIR红外光谱表征了ChCl-EG低共熔溶剂的结构，采用循环伏安法和计时电流法研究了ChCl-EG低共熔溶剂中电沉积Ag的电化学行为及成核机理，利用XRD和SEM等检测手段分析了沉积产物的物相组成和微观形貌.结果表明：ChCl-EG低共熔溶剂加入AgNO₃后，Ag是以[AgCl₂]^-形式存在的；Ag⁺在ChCl-EG体系中的还原属于一步沉积，是受扩散控制的准可逆过程；根据Scharifker-Hills模型分析，Ag在ChCl-EG中的沉积符合三维瞬时形核；沉积产物表面光滑，并且呈不规则的短棒状结构.更多还原

【Abstract】 The deep eutectic solvent（DES） is a new type of green solvent with the advantages of simple preparation, wide electrochemical window and high conductivity.In this paper, the electrochemical behavior of Ag in choline chloride-ethylene glycol（ChCl-EG） deep eutectic solvent was investigated.The structure of ChCl-EG deep eutectic solvent was characterized by Raman spectroscopy and FTIR infrared spectroscopy, and the electrochemical behavior and nucleation mechanism of Ag electrodeposited in ChCl-EG deep eutectic solvent were studied by cyclic voltammetry and chronoamperometry. The phase composition and micro-morphology of the deposited products were analyzed by XRD and SEM.The results show that Ag is present in the form of [AgCl₂]^- after the addition of AgNO₃ to the ChCl-EG deep eutectic solvent; the reduction of Ag⁺ in the ChCl-EG system is a one-step deposition and a quasi-reversible process controlled by diffusion; the deposition of Ag in ChCl-EG is consistent with three-dimensional transient nucleation according to the Scharifker-Hills model; the surface of the deposited product is smooth with an irregular short rod-like structure.更多还原