Which electrochemical process limits maximum current density during aluminum anodization in sulfuric acid?

A)Ionic transport through the oxide layer✓

B)Electrode polarization at the cathode

C)Viscosity limits in electrolyte convection

D)Ohmic resistance across the electrolyte

💡 Explanation

As current density increases, forming aluminum oxide via ionic transport becomes rate-limiting because the ions must move through the growing oxide layer, and at high current densities ionic transport can't keep up. Therefore, ionic transport limits current rather than, electrode polarization, viscosity, or ohmic resistance each dependent different constraints.

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Which electrochemical process limits maximum current density during aluminum anodization in sulfuric acid?

💡 Explanation

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