The values of voltage losses calculated on the basis of polarization curves and electrochemical impedance spectroscopy.

Voltage losses	FC_Ref	FC_T100	FC_T50	FC_T200	FC_TS100	FC_TS50	FC_TS200
Activation [mV] at 0.2 A cm−2	462	413	480	421	413	460	426
Ohmic [mV] at 0.2 A cm−2	72	52	70	46	50	52	50
Concentration [mV] at Jmax	118	165	145	201	116	125	123