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H
2 ECOnomy’s EcoFC-AM™ series PEM fuel cell stacks are designed for demonstration and study of fuel cell operation. Data Sheet Parameters by model
Model (No. of cells is indicated by the last digit) Nominal Power Approximate Dimensions Recommended gas flow rates (SLPM) (w/o bolts, fittings, and current collectors) H 2 Air EcoFC-1AM 3.2 W @ 0.6 V 9 x 9 x 3 cm 0.04 0.65 EcoFC-2AM 6.5 W @ 1.2 V 9 x 9 x 3.5 cm 0.085 1.3 EcoFC-3AM 10 W @ 1.8 V 9 x 9 x 4 cm 0.13 1.95 EcoFC-4AM 13 W @ 2.4 V 9 x 9 x 4.5 cm 0.17 2.5 EcoFC-5AM 16 W @ 3.0 V 9 x 9 x 5 cm 0.2 3.1 EcoFC-6AM 20 W@ 3.6 V 9 x 9 x 5.5 cm 0.25 3.7 General operational parameters and conditions Maximum output voltage (w/o load) 0.9 V per cell
*
Recommended gas pressures (gauge) 1 bar for both H
2 and Air Maximum gas pressures (each channel) 1.5 bar gauge Allowable pressure difference between the two channels 0.1 bar Acceptable ambient temperature 0 to +50 C Stack working temperature 65-70 C Stack maximal temperature Up to 80 C Fuel / Oxidant Hydrogen / Air
**
Optimal working conditions for achieving nominal output. 99.99% (or more) purity of H
2 gas, 100% humidity of gases
***
* It is strongly recommended to keep the loaded voltage higher than 0.5V on each cell. ** It is strongly recommended NOT to use pure oxygen instead of air, as it may cause damage of the MEAs, due to high activity of the catalyst. *** Operation at lower temperatures and lower humidity (RH) of gases is also possible, although with loss of performance.