Fuel Cell Systems

TestLab Fuel Cells

In our TestLab Fuel Cells, we characterize and test membrane fuel cells and systems with an electric power rating up to 20 kW_el.

In the characterization of fuel cells, we particularly emphasise the detailed investigation of local processes. With the help of our 68-channel system for spatially resolved electrochemical impedance spectroscopy of segmented single cells, we can analyse chemical-physical processes with regard to their dependence on  materials, construction and operation management.

Our walk-in climatic chamber allows stacks and systems to be investigated over the temperature range from -40 °C to +80 °C and relative humidity values between 10% and 95%. The high throughput of conditioned air, up to 2000 m³ per hour, is notable. To investigate the behaviour of a fuel cell under conditions similar to those in systems, we can also control peripheral equipment such as pumps, ventilators and valves. Inhomogeneities in the stack are identified reliably by single cell monitoring from the cell voltage and cell impedance spectrum.

Furthermore, we offer long-term tests of peripheral equipment, e.g. with hydrogen input and under extreme climatic conditions. In addition, we have access to an underpressure chamber to simulate altitudes of up to 6000 m. We investigate cell components and materials with respect to their electrochemical stability with a three-electrode configuration and by elemental analysis applying ICP-MS (inductively coupled plasma mass spectrometry).