Correlations between Mass Activity and Physicochemical Properties of Fe/N/C Catalysts for the ORR in
Journal of the American Chemical Society Volume: 136 Issue: 3 Pages: 978-985 Published: 2014 The aim of this work is to clarify the origin of the enhanced PEM-FC performance of catalysts prepared by the procedures described in Science 2009, 324, 71 and Nat. Commun. 2011, 2, 416. Catalysts were characterized after a first heat treatment in argon at 1050 °C (Ar) and a second heat treatment in ammonia at 950 °C (Ar + NH3). For the NC catalysts a variation of the nitrogen precurs