Predicting the transient response of a serpentine flow-field PEMFC

Modeling Water Management in Polymer-Electrolyte Fuel Cells

“…3-D models combine these two domains (along-the-channel and under-the-rib) to provide a unified solution to the transient problem. The 3-D model of Van Zee and coworkers 193,295 is an example. Here the domain considered contains both anode and cathode flow channels and ribs, GDLs, and the membrane and CLs are considered to be one layer.…”

Transient non-isothermal model of a polymer electrolyte fuel cell

“…Um et al developed a single-phase, isothermal 2D transient model in [16] and a similar 3D model in [17], though transient simulation results are not presented in the latter. 3D models can also be found in [18][19][20][21], none of which include liquid water transport and an energy balance-vital to describing flooding, membrane hydration and phase change. A more comprehensive one-dimensional model is presented in [22] in which liquid water is accounted for in a fully two-phase manner.…”

A transient PEMFC model with CO poisoning and mitigation by O2 bleeding and Ru-containing catalyst

“…9. In general an increased temperature will enhance performance, primarily because of the increased membrane conductivity (see the form of σ e in Table 7) and the resultant increased overpotential; the reaction rate (19) has an exponential dependence on overpotential, which outstrips the reduced concentration of reactants in the channels, on which the reaction rates have an algebraic dependence. This result on its own is not surprising but the transient aspect of the results does however reveal an important detail: as the temperature is lowered, in the upper part of the curve better performance is attained at fixed cell voltage.…”

“…For detailed reviews of steady-state modelling to the year 2004 the reader is referred to [14,15]. Notable exceptions to the steady-state trend are [16][17][18][19][20][21], none of which however include liquid-water transport or an energy balance, which are vital to an accurate description of flooding and membrane hydration. More comprehensive, fully two-phase models are found in [22,23].…”