Spatially resolved measurement of PEM fuel cells

A measurement set-up is presented containing a multichannel frequency response analyser system together with a multichannel potentiostat that allows measurements of the local electrical impedance spectra of segmented fuel cells simultaneously. For evaluation the current and impedance distribution is combined with optical spatially resolved measurement and numerical simulation. Furthermore the multichannel frequency response analyser system is used for the measurement of impedance spectra of single cells in a fuel cell stack simultaneously.