title: An advanced Ni-Fe layered double hydroxide electrocatalyst for water oxidation.
abstract: Highly active, durable, and cost-effective electrocatalysts for water oxidation to evolve oxygen gas hold a key to a range of renewable energy solutions, including water-splitting and rechargeable metal-air batteries. Here, we report the synthesis of ultrathin nickel-iron layered double hydroxide (NiFe-LDH) nanoplates on mildly oxidized multiwalled carbon nanotubes (CNTs). Incorporation of Fe into the nickel hydroxide induced the formation of NiFe-LDH. The crystalline NiFe-LDH phase in nanoplate form is found to be highly active for oxygen evolution reaction in alkaline solutions. For NiFe-LDH grown on a network of CNTs, the resulting NiFe-LDH/CNT complex exhibits higher electrocatalytic activity and stability for oxygen evolution than commercial precious metal Ir catalysts.
authors.affiliation: Department of Chemistry, Stanford University, Stanford, California 94305, USA.
authors.forename: Ming
authors.initials: M
authors.lastname: Gong
authors.forename: Yanguang
authors.initials: Y
authors.lastname: Li
authors.forename: Hailiang
authors.initials: H
authors.lastname: Wang
authors.forename: Yongye
authors.initials: Y
authors.lastname: Liang
authors.forename: Justin Z
authors.initials: JZ
authors.lastname: Wu
authors.forename: Jigang
authors.initials: J
authors.lastname: Zhou
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Tom
authors.initials: T
authors.lastname: Regier
authors.forename: Fei
authors.initials: F
authors.lastname: Wei
authors.forename: Hongjie
authors.initials: H
authors.lastname: Dai
mesh_terms: D002384:Catalysis; D055664:Electrochemical Techniques; D006878:Hydroxides / Q000138:chemical synthesis / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry; D009532:Nickel / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
chemical_list: D006878:Hydroxides; D037742:Nanotubes, Carbon; D014867:Water; D009532:Nickel; D007501:Iron