The manufacture and characterization of electrodes with Pt-Co/C catalysts as well as performance tests of the Membrane Electrode Assembly (MEA) on the Proton Exchange Membrane Fuel Cell (PEMFC) have been carried out. Pt-Co/C catalyst was made with various mass variations of Pt to Co by impregnation method. Each Pt-Co/C catalyst with variation/mass ratio Pt:Co = 1:0; 0.75:0.25; 0.50:0.50; 0.25:0…