Is iron involved in the lack of stability of Fe/N/C electrocatalysts used to reduce oxygen at the cathode of PEM fuel cells?

Is iron involved in the lack of stability of Fe/N/C electrocatalysts used to reduce oxygen at the cathode of PEM fuel cells?

Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nano Energy - Volume 29, November 2016, Pages 111-125

Gaixia Zhang, Régis Chenitz, Michel Lefèvre, Shuhui Sun, Jean-Pol Dodelet,