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jijis
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The shapes of the anodic and cathodic Tafel curves are different. What does it mean? Does it mean that the electrodeposition of the copper onto a surface of an electrode is uneven? If yes, I am also thinking that this has something to do with the macrothrowing power? Since it was done in an acidic plating bath it has a poor macrothrowing power. The slope on the right hand side is anodic and it has a greater slope, which shows that the small difference in potential will lead to an uneven deposit. Is my thinking correct? but why the cathodic curve is not like anodic? I am a bit confused here.
Anodic reactions:
1) Cu0 -> Cu2+ + 2e-
2)2H2O -> O2 + 4H+ + 4e-
Cathodic reactions:
1) 4H+ + 2e- -> 2H2
2) O2+ + 2H2O + 4e- -> 4OH-
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