What is electrolytic copper
The thick plate made of crude copper (containing 99% copper) was used as the anode, and the thin sheet of pure copper was used as the cathode. The mixture of sulfuric acid (H2SO4) and copper sulfate (CuSO4) was used as the electrolyte. After electrification, copper dissolves from the anode into copper ions (Cu) and moves to the cathode, where electrons are taken and separated from pure copper (also known as electrolytic copper). Impurities in crude copper, such as iron and zinc, which are more vivid than copper, dissolve with the copper into ions (Zn and Fe). Because these ions and copper ions are more difficult to separate, so during electrolysis only the proper regulation of potential difference can prevent these ions from separating on the cathode. Impurities less vivid than copper, such as gold and silver, are deposited at the bottom of the electrolyzer. The resulting copper, called "electrolytic copper", is of high quality and can be used to make electrical products.
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