How is "Discharge capacity [A.h]" calculated?

[emrebaburoglu]

Hello,

I'm trying to simulate battery ageing/rate capability tests in lithium ion half-cells and am having some issues understanding the results. When I do a rate capability test, I see that the "Discharge capacity [A.h]" decreases with increasing C-rate but the 'Positive electrode capacity [A.h]' stays the same even though it's a half-cell (negative is lithium). Likewise, when I simulate active material loss, I get that the "X-averaged positive electrode active material volume fraction" decreases over cycles but the discharge capacity stays the same. Is there any documentation for me to read to see how "Discharge capacity [A.h]" is calculated and what parameters it depends on?

[valentinsulzer]

Discharge capacity [A.h] is just the time-integral of the current in A.

[emrebaburoglu]

and how is the current calculated/what parameters does it depend on?