Durable Hybrid Electrocatalysts for Proton Exchange Membrane Fuel Cells

摘要

Developing transition metal and nitrogen co-doped carbon (Me-N-C) catalysts with comparable ORR activity is a feasible approach to addressing the material cost issue of proton exchange membrane fuel cells (PEMFCs). However, the low durability of Me-N-C hinders their practical application. It was found that the half-wave potential of Fe-N-C catalysts decreased significantly (16-30 mV) only after 10000 cycles between 0.6 and 1.0 V in acidic electrolytes,4-5 and above 50% current density loss only after 20 h at 0.4 V in sing cell tests.