Abstract
In order to increase the efficiency of nowadays fuel cells it is important to understand degradation processes. This paper focuses on defects related to compression of the Membrane-Electrode-Assembly. A particular useful tool therefore is the micro-computed tomography, as it allows a non-destructive insight into the MEA. The results from this imaging method are compared to classical electrochemical characterizations procedures. MEAs with different Gas Diffusion Layers (cloth and paper) are investigated and their individual behavior upon compression is evaluated.