Analyzing Structural Changes of Fe–N–C Cathode Catalysts in PEM Fuel Cell by Mößbauer Spectroscopy o
Journal of Physical Chemistry Letters Volume: 5 Issue: 21 Pages: 3750-3756 Published: 2014 The applicability of analyzing by Mößbauer spectroscopy the structural changes of Fe–N–C catalysts that have been tested at the cathode of membrane electrode assemblies in proton exchange membrane (PEM) fuel cells is demonstrated. The Mößbauer characterization of powders of the same catalysts was recently described in our previous publication. A possible change of the iron species upon