Separate electrode dimensions

[aabills]

It's pretty common in practice for the anode and cathode to have different heights and widths (usually by a small margin, admittedly). However, PyBaMM forces them to be the same by not providing separate dimensions for the negative and positive electrodes. This can be compensated by changing the maximum concentration, but this approach is unphysical. Should we change them to be separate?

[rtimms]

The interpretation here is that height times width gives the overlapping electrode pair area (i.e., it doesn't include the overhang).

[aabills]

Yes. But that means that the assumption is that the overhang doesn't participate at all, which I doubt is true, though surprisingly, I can't find a 3d study revealing the answer

[alighato]

I agree with Alec. See for example https://www.sciencedirect.com/science/article/pii/S2590116819300116 p.13.