ChCl-urea-ZnO低共熔溶剂体系的电化学行为
发布时间：2018-10-30 10:32
【摘要】：研究了ChCl-urea-ZnO低共熔溶剂(DES)体系的电化学行为与ZnO浓度的相互关系。电导率测定结果表明,ChCl-urea-ZnO体系的电导率随ZnO浓度的增加而增大,但当ZnO浓度超过0.24 mol·L~(-1),体系电导率趋于稳定。随着温度的升高,ChCl-urea-ZnO的电导率增大,电导率与温度的关系符合Kohlraush经验公式。循环伏安测试结果表明,在ChCl-urea-ZnO低共熔体系中,Zn(Ⅱ)还原为金属锌是受扩散控制的准可逆过程,Zn(Ⅱ)的扩散系数约为1.2×10~(-7) cm~2·s~(-1)。而且金属锌的析出电位随ZnO浓度的增加而正移,峰值电流明显增大,说明增大ZnO浓度有利于锌的沉积。此外,ZnO浓度对锌沉积层的形貌有明显影响,不同ZnO浓度下得到锌沉积物的形貌各不相同,有短棒状、方形等。
[Abstract]:The relationship between the electrochemical behavior of ChCl-urea-ZnO eutectic solvent (DES) system and the concentration of ZnO was studied. The results of conductivity measurement show that the conductivity of ChCl-urea-ZnO system increases with the increase of ZnO concentration, but when the concentration of ZnO exceeds 0.24 mol L ~ (-1), the conductivity of the system tends to be stable. With the increase of temperature, the conductivity of ChCl-urea-ZnO increases, and the relationship between conductivity and temperature accords with the empirical formula of Kohlraush. The results of cyclic voltammetry show that the diffusion coefficient of, Zn (鈪，
本文编号：2299754
[Abstract]:The relationship between the electrochemical behavior of ChCl-urea-ZnO eutectic solvent (DES) system and the concentration of ZnO was studied. The results of conductivity measurement show that the conductivity of ChCl-urea-ZnO system increases with the increase of ZnO concentration, but when the concentration of ZnO exceeds 0.24 mol L ~ (-1), the conductivity of the system tends to be stable. With the increase of temperature, the conductivity of ChCl-urea-ZnO increases, and the relationship between conductivity and temperature accords with the empirical formula of Kohlraush. The results of cyclic voltammetry show that the diffusion coefficient of, Zn (鈪，
本文编号：2299754
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