Date:	April 6, 1998

Objectives:

Complete potentistatic performance evaluation on the 25 cm2 BCS fuel cell stack, made ,( 0.4mg/cm2, 20% Pt on C). Using standard current vs. Potential and Cyclic voltammetric sweeps, a fuel cell profile will be constructed.

Procedure Utilized:

Standard measurement practice of sweep the voltage from an open circuit potential to a minimum potential of 1.0V and back up to the open circuit potential. The will follow the voltage sweep file 4_01.txt or 4_05.txt. The sweep will be carried out as a Tafel sweep.

Environment:

Temperature-	70 degrees F

Barometer-	NA

Relative Humidity-	NA

Results & Conclusions:

The potentistatic performance evaluation on the 25 cm2 BCS fuel cell stack was completed sucessfully. The production water is somewhat slow due to the self humidification and I am expectin some evaporation into the room, as a result of the open collection trap.