Current density is, conventionally, current divided by area. For EDLC's if you are using a material with a known, constant mass:area ratio, then mass normalization could be the same thing (though different value). Even if not known, since capacitance is proportional to area, i/m would tell you how much relative [accessable] area your material has in a given cell.
So far as what is displayed for your system: I'm not sure what you are using but it could be you can switch whether you are looking at current or current density either while running or in analysis, but whatever you are using that is likely to divide by area, not mass. You may be best off doing the calculation manually in, e.g. Excel or Origin.
Current density (A/g) = Applied current (A) / amount of electrode material (g)
Current density = Applied current / Electrode material amount in grams
Since current density = applied current / mass of electrode in gram.
Is that average mass of electrode active materials tight?
Sujoy Sarkar Jacob Ketter Do you consider mass of both conductive and nonconductive components incase of conductive blends in this formula?
As we know current density= applied current (in ampere)/mass of active material (in gram) so before plotting the potential vs current density graph we have to either divide 0.001 or multiple 1000 with the values of current in y-axis.
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