title: Composition-tunable Pt-Co alloy nanoparticle networks: facile room-temperature synthesis and supportless electrocatalytic applications.
abstract: Pt-Co alloy nanoparticle networks (NNs) with adjustable composition are synthesized by co-reduction of H(2) PtCl(6)  and CoCl(2)  with NaBH(4)  in an ethylene glycol assisted cetyltrimethylammonium bromide/water/chloroform system at room temperature. Electrochemical measurements indicate that the as-prepared spongelike Pt-Co NNs exhibit composition-dependent electrocatalytic activities and CO tolerance with better durability toward methanol and formic acid oxidation than commercially available Pt/C catalyst. In particular, Pt(3) Co NNs show the highest specific activity, while Pt(2) Co NNs exhibit optimal mass activity among Pt-Co alloy NNs with different composition. These Pt-Co alloy NNs may be promising supportless anode catalysts for the direct methanol and direct formic acid fuel cells.
authors.affiliation: Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China.
authors.forename: You
authors.initials: Y
authors.lastname: Xu
authors.forename: Yongqiang
authors.initials: Y
authors.lastname: Yuan
authors.forename: Aijing
authors.initials: A
authors.lastname: Ma
authors.forename: Xuan
authors.initials: X
authors.lastname: Wu
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Bin
authors.initials: B
authors.lastname: Zhang