title: Palladium Nanoparticles Supported on Nitrogen and Sulfur Dual-Doped Graphene as Highly Active Electrocatalysts for Formic Acid and Methanol Oxidation.
abstract: Optimized designing of highly active electrocatalysts has been regarded as a critical point to the development of portable fuel cell systems with high power density. Here we report a facile and cost-effective strategy to synthesis of ultrafine Pd nanoparticles (NPs) supported on N and S dual-doped graphene (NS-G) nanosheets as multifunctional electrocatalysts for both direct formic acid fuel cell and direct methanol fuel cell. The incorporation of N and S atoms into graphene frameworks is achieved by a thermal treatment process, followed by the controlled growth of Pd NPs via a solvothermal approach. Owning to the unique structural features as well as the strong synergistic effects, the resulting Pd/NS-G hybrid exhibits outstanding electrocatalytic performance toward both formic acid and methanol electro-oxidation, such as higher anodic peak current densities and more exceptional catalytic stability than those of Pd/Vulcan XC-72R and Pd/undoped graphene catalysts. These findings open up new possibility in the construction of advanced Pd-based catalysts, which is conducive to solving the current bottlenecks of fuel cell technologies.
authors.affiliation: College of Mechanics and Materials, Hohai University , Nanjing 210098, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech) , 30 South Puzu Road, Nanjing 211816, China.
authors.forename: Jixin
authors.initials: J
authors.lastname: Zhu
authors.affiliation: Department of Materials Science and NanoEngineering, Rice University , Houston, Texas 77005, United States.
authors.forename: Chandra Sekhar
authors.initials: CS
authors.lastname: Tiwary
authors.affiliation: Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech) , 30 South Puzu Road, Nanjing 211816, China.
authors.forename: Zhongyuan
authors.initials: Z
authors.lastname: Ma
authors.affiliation: College of Mechanics and Materials, Hohai University , Nanjing 210098, China.
authors.forename: Huajie
authors.initials: H
authors.lastname: Huang
authors.affiliation: College of Mechanics and Materials, Hohai University , Nanjing 210098, China.
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Zhang
authors.affiliation: College of Mechanics and Materials, Hohai University , Nanjing 210098, China.
authors.forename: Zhiyong
authors.initials: Z
authors.lastname: Lu
authors.affiliation: Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech) , 30 South Puzu Road, Nanjing 211816, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Huang
authors.affiliation: College of Mechanics and Materials, Hohai University , Nanjing 210098, China.
authors.forename: Yuping
authors.initials: Y
authors.lastname: Wu
keywords: dual-doped graphene; electrocatalyst; formic acid oxidation; fuel cells; methanol oxidation; palladium nanoparticles