Oxygen Mass Conservation in the Channel

Voltage Loss due to Oxygen Transport in the Channel Oxygen Mass Conservation in the Channel 

The equations of the previous section allow us to take a next step by taking into account the potential loss resulting from the oxygen transport in the channel. Suppose that the cell has a straight oxygen channel. Let the coordinate z be directed along the 

FIGURE 5.6 (a) A local polarization curve of the cathode side of a PEFC (5.46) for the indicated values of the oxygen diffusion coefficient in the cathode GDL (cm s ). Both the curves correspond to infinite oxygen stoichiometry k = oo. (h) A polarization curve with the account of finite oxygen stoichiometry (5.59) for the indicated k and E/y = 0.02 cm s. The other parameters are listed in Table 5.7. 

FIGURE 5.7 Schematic of a cathode side of the cell with the linear oxygen channel. 

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