【摘要】：研究了ChCl-urea-ZnO低共熔溶劑(DES)體系的電化學(xué)行為與ZnO濃度的相互關(guān)系。電導(dǎo)率測(cè)定結(jié)果表明,ChCl-urea-ZnO體系的電導(dǎo)率隨ZnO濃度的增加而增大,但當(dāng)ZnO濃度超過(guò)0.24 mol·L~(-1),體系電導(dǎo)率趨于穩(wěn)定。隨著溫度的升高,ChCl-urea-ZnO的電導(dǎo)率增大,電導(dǎo)率與溫度的關(guān)系符合Kohlraush經(jīng)驗(yàn)公式。循環(huán)伏安測(cè)試結(jié)果表明,在ChCl-urea-ZnO低共熔體系中,Zn(Ⅱ)還原為金屬鋅是受擴(kuò)散控制的準(zhǔn)可逆過(guò)程,Zn(Ⅱ)的擴(kuò)散系數(shù)約為1.2×10~(-7) cm~2·s~(-1)。而且金屬鋅的析出電位隨ZnO濃度的增加而正移,峰值電流明顯增大,說(shuō)明增大ZnO濃度有利于鋅的沉積。此外,ZnO濃度對(duì)鋅沉積層的形貌有明顯影響,不同ZnO濃度下得到鋅沉積物的形貌各不相同,有短棒狀、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，

本文編號(hào)：2299754