title: Reduction procedure effect on the electrochemical properties of conductive carbon black supported Pt-Pd electrocatalysts.
abstract: Conductive carbon black supported Pt-Pd nanocomposites were prepared to study a difference of simultaneously and sequentially reduced Pt-Pd nanocomposites using polyol method. The concentration of Pt-Pd alloyed metals on carbon blacks (CB) was adjusted to 20 wt%. The catalysts could be characterized by transmission electron microscopy, X-ray diffraction and thermogravimetric analysis. The electrochemical activities of Pt-Pd were measured by cyclic voltammograms. As a result, electrochemical active surface area (ESA) value of sequentially deposited Pt-Pd/CB was shown to 66 m2/g, which was higher than 55 m2/g of simultaneously deposited Pt-Pd/CB. Besides, average particle size of sequentially deposited Pt-Pd/CB was calculated to 1.7 nm which was smaller than 2.2 nm of simultaneously deposited Pt-Pd/CB.
authors.affiliation: Department of Chemical and Biochemical Engineering, Pusan National University, San 30, Jangjeon-dong, Geumjeong-gu, Busan 609-735, Korea.
authors.forename: Jae Young
authors.initials: JY
authors.lastname: Park
authors.forename: Soo-Jin
authors.initials: SJ
authors.lastname: Park
authors.forename: Yongju
authors.initials: Y
authors.lastname: Jung
authors.forename: Seok
authors.initials: S
authors.lastname: Kim
mesh_terms: D004563:Electrochemistry; D046529:Microscopy, Electron, Transmission; D010084:Oxidation-Reduction; D010165:Palladium / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D053260:Soot; D014961:X-Ray Diffraction
chemical_list: D053260:Soot; D010984:Platinum; D010165:Palladium