C4.4.7.1 Investigation of a PEM Fuel Cell Stack

Investigation of a PEM Fuel Cell Stack PEM fuel cells contain a proton-conducting membrane which separates two half-cells. They require no other electrolytes, and that means that they can function with almost no liquid. Due to the low voltage that an individual fuel cell supplies, many fuel cells are wired together to form a "stack". In experiment C4.4.7.1, the function of such a fuel cell stack is studied and various circuits are compared with one another. Components: 666 4812 PEM fuel cell stack, CPS 1 666 4795 HydroStik PRO, CPS 1 666 4796 * HydroStik PRO 1 666 4794 Bubble counter, CPS 1 666 4831 Electric load, CPS 1 666 4798 HydroFill PRO 1 524 013 Sensor-CASSY 2 1 524 220 CASSY Lab 2 1 524 020USB * CASSY-Display US 1 501 44 Connecting leads, 19 A, 25 cm, red/blue, pair 1 501 45 Connecting lead, 19 A, 50 cm, red/blue, pair 1 666 425 Panel frame C50, two-level, for CPS 1 667 198 Silicone tubing, 2 mm diam., 1 m 1 666 464 Blank panel, 100 mm, CPS 2 additionally required: PC with Windows 7 or higher 1 Articles marked with * are not essential, we do however recommend them to carry out the experiment.