title: Fabrication of Highly Stable and Efficient PtCu Alloy Nanoparticles on Highly Porous Carbon for Direct Methanol Fuel Cells.
abstract: Boosting the durability of Pt nanoparticles 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 electrocatalytic activity when tested for both oxygen reduction reaction and methanol oxidation reactions. A high mass activity of 0.043 mA/μgPt (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 prevents the nanoparticles from agglomeration, migration, and dissolution as evident by TEM analysis.
authors.affiliation: Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University , Islamabad 45320, Pakistan.|Department of Chemical & Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, 117585 Singapore.
authors.forename: Inayat Ali
authors.initials: IA
authors.lastname: Khan
authors.affiliation: Department of Chemical & Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, 117585 Singapore.
authors.forename: Yuhong
authors.initials: Y
authors.lastname: Qian
authors.affiliation: Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University , Islamabad 45320, Pakistan.
authors.forename: Amin
authors.initials: A
authors.lastname: Badshah
authors.affiliation: Department of Chemical & Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, 117585 Singapore.
authors.forename: Dan
authors.initials: D
authors.lastname: Zhao
authors.affiliation: Catalysis and Nanomaterials Lab 27, Department of Chemistry, Quaid-i-Azam University , Islamabad 45320, Pakistan.
authors.forename: Muhammad Arif
authors.initials: MA
authors.lastname: Nadeem
keywords: bimetallic nanoparticles; durability; energy storage; fuel cells; methanol oxidation