Hollow Iron–Vanadium Composite Spheres: A Highly Efficient Iron‐Based Water Oxidation Electrocatalyst without the Need for Nickel or Cobalt

作     者：Ke Fan Yongfei Ji Haiyuan Zou Jinfeng Zhang Bicheng Zhu Hong Chen Quentin Daniel Yi Luo Jiaguo Yu Licheng Sun 

作者机构：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 School of Biotechnology KTH Royal Institute of Technology 10691 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 

出 版 物：《Angewandte Chemie》 

年 卷 期：2017年第129卷第12期

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

主　　题：Eisenkomposite Elektrokatalysatoren Überpotential Vanadium Wasseroxidation 

摘      要：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 −2 catalytic 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.