title: Polyaniline-polypyrrole composites with enhanced hydrogen storage capacities.
abstract: A facile method for the synthesis of polyaniline-polypyrrole composite materials with network morphology is developed based on polyaniline nanofibers covered by a thin layer of polypyrrole via vapor phase polymerization. The hydrogen storage capacity of the composites is evaluated at room temperature exhibits a twofold increase in hydrogen storage capacity. The HCl-doped polyaniline nanofibers exhibit a storage capacity of 0.46 wt%, whereas the polyaniline-polypyrrole composites could store 0.91 wt% of hydrogen gas. In addition, the effect of the dopant type, counteranion size, and the doping with palladium nanoparticles on the storage properties are also investigated.
authors.affiliation: Laboratory of Applied Macromolecular Chemistry, School of Materials Science and Engineering, Gwangju Institute of Science and Technology GIST, 1 Oryong-dong, Buk-gu, Gwangju 500-712, South Korea.
authors.forename: Nour F
authors.initials: NF
authors.lastname: Attia
authors.forename: Kurt E
authors.initials: KE
authors.lastname: Geckeler
mesh_terms: D000814:Aniline Compounds / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*
chemical_list: D000814:Aniline Compounds; D011108:Polymers; D011758:Pyrroles; C416807:polyaniline; C067635:polypyrrole; D010165:Palladium; D006859:Hydrogen