Proton exchange membrane fuel cell polarization curve

Figure 6.7. Polarization curves for different concentrations of NO . Cell temperature 60°C, H2/air (1.2/3.3) relative humidity H2 95% and air 0% backpressure 1.5 atm [49], (Reprinted from Electrochimica Acta, 51(19), Yang Daijun, Ma Jianxin, Xu Lin, Wu Minzhong and Wang Haijiang, The effect of nitrogen oxides in air on the performance of proton exchange membrane fuel cell, 4039-44, 2006, with permission from Elsevier.)...

Maranzana, G., Mainka, J., Lottin, O., Dillet, J., Lamibrac, A., Thomas, A., and Didietjean, S. 2012. A proton exchange membrane fuel cell impedance model taking into account convection along the air channel On the bias between the low frequency limit of the impedance and the slope of the polarization curve, 83, 13-27. 

A proton exchange membrane (PEM) fuel cell plant of 100 kWe capacity is to be designed in conjunction with the experimental polarization curve of Fig. 3b. The stack voltage requirement is 200 V, and cell area is limited to 30 x 30 cm set by the method of assembly. The stack runs on humidified H2 and air at 1 atm and 80 °C. The cost ofH2is 5/kg. The stack operates 8,150 h/year and has a lifetime of 5 years with no salvage value. (In reality, the Pt in the stack would be of value). The objective of this example is to determine the number of cells, cell area, and power density of the stack and costs of the stack, fuel cell plant, fuel, and electricity (per kWhe). 

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