Fabrication of Highly Stable and Efficient PtCu Alloy Nanoparticles on Highly Porous Carbon for Direct Methanol Fuel Cells

Boosting the durability of Pt riatioparticles by controlling the composition and morphology is extremely important for fuel cells commercialization. We deposit the Pt-Cu alloy nanoparticles over high surface area carbon in different metallic molar ratios and optimize the conditions to achieve desired material. The novel bimetallic electro-catalyst {Pt-Cu/PC-950 (15:15%)} offers exceptional electrocatalytie activity when tested for both oxygen reduction reaction and methanol oxidation reactions. A high mass activity of 0.043 mA/mu g(Pt) (based on Pt mass) is recorded for ORR An outstanding longevity of this electro-catalyst is noticed when compared to 20 wt Pt loaded either on PC-950 or commercial carbon. The high surface area carbon support offers enhanced activity and pievepts the nanoparticles from agglomeration, migration, arid disSolution as evident by TEM analysis.