Performance Evaluation of PtAgFe/C as a Cathode Catalyst in PEM Fuel Cell

Authors : Çiğdem Güldür, Silver Güneş

Pages : 42-51

View : 16 | Download : 6

Publication Date : 2018-03-01

Article Type : Research Paper

Abstract :PtAgFe/C catalysts with different atomic ratios were synthesized by wet impregnation reduction method in order to be used in the catalysis of the oxygen reduction reaction insert ignore into journalissuearticles values(ORR); in the polymer electrolyte membrane insert ignore into journalissuearticles values(PEM); fuel cell. Physical characterization studies showed that the surface areas of the catalysts varied between 162 and 181 m 2 /g and the pore textures were mainly macroporous. The mean particle sizes were as small as 3.01 nm, which is for Pt 6 AgFe/C, but increased as the Pt atomic ratio decreased. The highest electrochemically active area was obtained as 557 cm 2 /mg from the Pt 6 AgFe/C which has the highest Pt atomic ratio. However, mass activities were higher in the catalysts with lesser Pt content. Finally, catalysts were tested in a home-made PEM single cell by preparing membrane electrode assemblies insert ignore into journalissuearticles values(MEA);. Pt 6 AgFe/C had comparable performance to the commercial Pt/C catalyst when Pt content was taken into consideration. Results show that PtAgFe/C ternary catalysts can be used as a cost effective alternative in PEM fuel cells. 
Keywords : PEM, Cathode, Oxygen reduction reaction, Ternary catalyst