Though it may be of interest to increase the area at specific potentials in the dQ/dV diagram but the physical mechanism and interpretation thereof would be interesting to investigate. An even greater interest lies, however in reducing the area under the curve at some potentials. This is due to some intercalation sites or phase transitions associated with increased corrosion, particle cracking, or low reversibility . Reducing the area under the curve at some potentials can be obtained by superimposing an arctangent (arctan) instead of a sinusoidal onto the linear sweep, as shown in Figure . The issue with this method is, however, that if one chooses a fixed total time to charge or effective C-rate (since it is highly variable in this case) the charge needs to be "shoved" into the following higher phase/site at the next higher potential. This leads again to spikes, as observed for the superimposed sinusoidal. One could, of course, try to optimize the ramp slope, potential difference etc. to mitigate this overshoot in differential capacity. If the amplitude of the arctan for the linear sweep voltammetry experiment is lowered to only 0.1V there are still significant overshoots in the dQ/dV plot. A more elegant way is, however to use the quasi-non-linear charging schedule as shown in Figure ) and superimpose the previously discussed arctan. The resulting dQ/dV plot is shown in Figure . The interesting property here is that the resulting current is non-linear in time (tough essentially linear), not