OPEM Report (Amphlett Model)

What is Amphlett ?

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.


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


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] 0.41049026828347596

Generated By OPEM Version 1.3