Why can cyclic voltammograms of the same system look inverted when done by different groups?
This is due to the existence of different conventions for plotting current and potential. For any voltammogram, current is plotted along the y-axis, and potential along the x-axis. In one convention (called classical or polarographic), potentials become more negative along the (positive) x-axis, and reduction (cathodic) currents are positive. In the other convention (IUPAC), the opposite is applies. If you don’t want problems with your papers, you have to use the IUPAC convention: anodic current is positive and positive potentials are right-hand plotted.
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