title: 3D Graphene Aerogels Decorated with Cobalt Phosphide Nanoparticles as Electrocatalysts for the Hydrogen Evolution Reaction.
abstract: The development of non-precious-metal hydrogen evolution reaction (HER) electrocatalysts with high activity and excellent durability in acidic media is of significant importance for renewable energy research. We report a novel electrocatalyst based on a three-dimensional (3D) graphene aerogel decorated with cobalt phosphide nanoparticles (CoP/GA). The material has a unique hierarchical porous structure with CoP nanoparticles encapsulated uniformly within the graphene sheets. The optimized catalyst shows superior activity, with an overpotential of only 121 mV at 10 mA cm-2, a Tafel slope of 50 mV dec-1, and an exchange current density of 0.105 mA cm-2, and it maintains its catalytic activity for at least 13 h. More importantly, this work provides a versatile way for the rational design and fabrication of 3D graphene-based multifunctional composite materials.
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun Jilin,130022, PR China.|University of Chinese Academy of Sciences, Beijing, 100049, PR China.
authors.forename: Xueping
authors.initials: X
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun Jilin,130022, PR China.|University of Chinese Academy of Sciences, Beijing, 100049, PR China.
authors.forename: Yujie
authors.initials: Y
authors.lastname: Han
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun Jilin,130022, PR China.|University of Chinese Academy of Sciences, Beijing, 100049, PR China.
authors.forename: Liang
authors.initials: L
authors.lastname: Huang
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun Jilin,130022, PR China.|University of Chinese Academy of Sciences, Beijing, 100049, PR China.
authors.forename: Shaojun
authors.initials: S
authors.lastname: Dong
mesh_terms: D002384:Catalysis; D005782:Gels / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D010720:Phosphines / Q000737:chemistry*; D016062:Porosity; D059205:Renewable Energy
chemical_list: D005782:Gels; D010720:Phosphines; C000613213:cobalt phosphide; D006108:Graphite; D006859:Hydrogen
keywords: cobalt; electrocatalysis; graphenes; hydrogen; porous materials