Amphlett static model is a parametric model that predicting the performance of a solid polymer electrolyte,
proton exchange membrane (PEM) fuel cell. Main concepts in the Amphlett model includes Nernst voltage, PEMFC losses
(activation polarization loss, ohmic polarization loss and concentration polarization loss), power and efficiency
of fuel cell. This parametric model of PEMFC using a combination of mechanistic and empirical approach. The ideal
standard potential (Nernst potential) of an H2/O2 FC is 1.229 V with liquid water product. The actual cell potential
is decreased from its reference potential because of irreversible losses.
Inputs
Input
Description
Value
A
Active area [cm^2]
50.6
JMax
Maximum current density [A/(cm^2)]
1.5
N
Number of single cells
1
PH2
Partial pressure [atm]
1
PO2
Partial pressure [atm]
1
R
R-Electronic [ohm] (*Optional)
0
T
Cell operation temperature [K]
343.15
i-start
Cell operating current start point [A]
0
i-step
Cell operating current step
0.1
i-stop
Cell operating current end point [A]
75
l
Membrane thickness [cm]
0.0178
lambda
An adjustable parameter with a min value of 14 and max value of 23
23
Overall Parameters
Parameter
Description
Value
Efficiency|Pmax
Cell efficiency at maximum power
0.2825484954669381
Pmax
Maximum power [W]
29.399736050325846
Ptotal(Elec)
Total electrical power [W]
45.01193996081915
Ptotal(Thermal)
Total thermal power [W]
47.074060039180836
VFC|Pmax
Cell voltage at maximum power [V]
0.44077565292842347
Graphs
Parameter
Description
Value
K
Slope of the curve obtained by linear approximation [A^(-1)]
-0.005863884375694599
Pmax(L-Approx)
Maximum power obtained by linear approximation [W]
28.735604176281242
V0
Intercept of the curve obtained by linear approximation [V]
0.8209805365669519
VFC|Pmax(L-Approx)
Cell voltage at maximum power obtained by linear approximation [V]
