Fuel Cell Research with Neutron Imaging at Helmholtz Centre Berlin

This paper demonstrates the capabilities of the new instrument CONRAD II at Helmholtz Centre Berlin for the investigation of fuel cells. The performance gain of CONRAD II with respect to its predecessor instrument, CONRAD I, is demonstrated and different examples for in-operando measurements of polymer electrolyte membrane fuel cells are given. Furthermore, an application example for the high resolution detection system recently developed by the group is demonstrated which includes a three-dimensional measurement of the water distribution in a small fuel cell with a width of about 14 mm by means of neutron tomography.