title: Hollow Iron-Vanadium Composite Spheres: A Highly Efficient Iron-Based Water Oxidation Electrocatalyst without the Need for Nickel or Cobalt.
abstract: Noble-metal-free bimetal-based electrocatalysts have shown high efficiency for water oxidation. Ni and/or Co in these electrocatalysts are essential to provide a conductive, high-surface area and a chemically stable host. However, the necessity of Ni or Co limits the scope of low-cost electrocatalysts. Herein, we report a hierarchical hollow FeV composite, which is Ni- and Co-free and highly efficient for electrocatalytic water oxidation with low overpotential 390 mV (10 mA cm-2catalytic current density), low Tafel slope of 36.7 mV dec-1, and a considerable durability. This work provides a novel and efficient catalyst, and greatly expands the scope of low-cost Fe-based electrocatalysts for water splitting without need of Ni or Co.
authors.affiliation: Department of Chemistry, KTH Royal Institute of Technology, 10044, Stockholm, Sweden.|State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, China.
authors.forename: Ke
authors.initials: K
authors.lastname: Fan
authors.affiliation: School of Biotechnology, KTH Royal Institute of Technology, 10691, Stockholm, Sweden.
authors.forename: Yongfei
authors.initials: Y
authors.lastname: Ji
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, China.
authors.forename: Haiyuan
authors.initials: H
authors.lastname: Zou
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, China.
authors.forename: Jinfeng
authors.initials: J
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, China.
authors.forename: Bicheng
authors.initials: B
authors.lastname: Zhu
authors.affiliation: Department of Chemistry, KTH Royal Institute of Technology, 10044, Stockholm, Sweden.
authors.forename: Hong
authors.initials: H
authors.lastname: Chen
authors.affiliation: Department of Chemistry, KTH Royal Institute of Technology, 10044, Stockholm, Sweden.
authors.forename: Quentin
authors.initials: Q
authors.lastname: Daniel
authors.affiliation: School of Biotechnology, KTH Royal Institute of Technology, 10691, Stockholm, Sweden.
authors.forename: Yi
authors.initials: Y
authors.lastname: Luo
authors.affiliation: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, China.
authors.forename: Jiaguo
authors.initials: J
authors.lastname: Yu
authors.affiliation: Department of Chemistry, KTH Royal Institute of Technology, 10044, Stockholm, Sweden.|State Key Lab of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology, 116024, Dalian, China.
authors.forename: Licheng
authors.identifier: 0000-0002-4521-2870
authors.initials: L
authors.lastname: Sun
keywords: electrocatalysts; iron composites; overpotential; vanadium; water oxidation