Conclusion

1) In the case of cross flow cell, a minimum point of hydrogen concentration exits near the air inlet area.

2) Temperature distribution of cooling plate influences current density distribution.

3) Hydrogen concentration near the air inlet area decrease as oxygen utilization increasing. On the other hand, oxygen concentrations change little as hydrogen utilization clianging.

4) Calculated results of hydrogen concentration deviation at the fuel outlet almost correspond with the measured results.

5) Calculated result shows that current density varies in the range of 250-360mA/cm2 over the electrode under oxygen utilization of 50%. Under oxygen utilization of 70%, the range of the current density expands into 230-380mA/cm2.

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