前言溶液中金属杂质的影响,有很多研究者研究过了。众所周知,熔液中的少量杂质会降低电流效率。在采用酸性水溶液电积次贵金属的过程中,在阴极上发生主金属与氢析出的争先反应,这种现象与具有很高氢超电压的锌电积相似。而且,电积锌的重新溶解(系锌电极腐蚀),与锌的溶解过程有关。锌在酸性介质中的腐蚀速度取决于阴极的微量的氢超电压。因 Preface Effect of metal impurities in solution, many researchers have studied. As we all know, a small amount of impurities in the melt will reduce the current efficiency. During the electrowinning of the noble metal with an acidic aqueous solution, a valency reaction of the main metal with hydrogen evolution occurs at the cathode, similar to the zinc electrowinning with high hydrogen overvoltages. Moreover, the re-dissolution of zinc electrowinning (zinc electrode corrosion), and zinc dissolution process. The rate of corrosion of zinc in an acidic medium depends on the trace amount of hydrogen overvoltage at the cathode. because