title: Nanostructured nickel phosphide as an electrocatalyst for the hydrogen evolution reaction.
abstract: Nanoparticles of nickel phosphide (Ni2P) have been investigated for electrocatalytic activity and stability for the hydrogen evolution reaction (HER) in acidic solutions, under which proton exchange membrane-based electrolysis is operational. The catalytically active Ni2P nanoparticles were hollow and faceted to expose a high density of the Ni2P(001) surface, which has previously been predicted based on theory to be an active HER catalyst. The Ni2P nanoparticles had among the highest HER activity of any non-noble metal electrocatalyst reported to date, producing H2(g) with nearly quantitative faradaic yield, while also affording stability in aqueous acidic media.
authors.affiliation: Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States.
authors.forename: Eric J
authors.initials: EJ
authors.lastname: Popczun
authors.forename: James R
authors.initials: JR
authors.lastname: McKone
authors.forename: Carlos G
authors.initials: CG
authors.lastname: Read
authors.forename: Adam J
authors.initials: AJ
authors.lastname: Biacchi
authors.forename: Alex M
authors.initials: AM
authors.lastname: Wiltrout
authors.forename: Nathan S
authors.initials: NS
authors.lastname: Lewis
authors.forename: Raymond E
authors.initials: RE
authors.lastname: Schaak
mesh_terms: D002384:Catalysis; D055664:Electrochemical Techniques; D006859:Hydrogen / Q000737:chemistry*; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D010316:Particle Size; D010720:Phosphines / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D010720:Phosphines; D009532:Nickel; D006859:Hydrogen