What is cathode copper and how to make it

Cathode copperIt is made of thick copper (containing 99% copper) as the anode, pure copper is made into thin sheets as the cathode, and the mixture of sulfuric acid (H2SO4) and copper sulfate (CuSO4) is used as the electrolyte. It dissolves into copper ions (Cu) and moves to the cathode, and after reaching the cathode, electrons are obtained and pure copper (also known as electrolytic copper) is precipitated at the cathode.

Impurities in blister copper, such as iron and zinc, which are more active than copper, will dissolve into ions (Zn and Fe) together with copper. Since these ions are not easy to precipitate compared with copper ions, it is only necessary to properly adjust the potential difference during electrolysis to prevent these ions. The ions are precipitated on the anode. Impurities that are less reactive than copper, such as gold and silver, are deposited at the bottom of the electrolytic cell. The copper plate so consumed, called "electrolytic copper", is of high quality and can be used to make electrical products. Precipitated in The bottom of the electrolytic cell is called "anode slime", the outside is rich in gold and silver, which is very precious, and it has extremely high economic value when it is taken out and reprocessed.