In addition to the additive-free electrolytes, the grain size of copper deposits was also enhanced by the presence of chloride ions in the gelatin-containing and thiourea-containing electrolytes.

• 当酸铜镀液含有动物胶或硫月尿系列之有机添加剂时则形成的铜电沈积也会因氯离子的存在而使铜电沈积的颗粒增大。