Tutorials on Electrocatalysis in Low Temperature Fuel Cells Volume: 45 Issue: 2 Pages: 35-44 Published: 2012 Polymer electrolyte membrane fuel cells (PEMFC) are electrical power generators for a wide range of possible applications, but are still considered too expensive for many. To reduce their cost, much research has focused on replacing the expensive Pt-based electrocatalysts in PEMFCs with a lower-cost alternative. Fe-based cathode catalysts are a promising alternative. T