An oxidation peak in the cathodic branch of a cyclic voltammogram can be explained by the reversible deactivation and reactivation of the electrode surface. This phenomenon could be caused by the potential-dependent adsorption of the product of an irreversible electrode reaction.

中文翻译：

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阶梯式循环伏安法中电极表面再活化的表现

循环伏安图的阴极分支中的氧化峰可以通过电极表面的可逆去活化和再活化来解释。这种现象可能是由于不可逆电极反应产物的电势依赖性吸附引起的。