Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2017-03-13

Journal: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

Included Journals: Scopus、ESI高被引论文、EI、SCIE

Volume: 56

Issue: 12

Page Number: 3289-3293

ISSN: 1433-7851

Key Words: electrocatalysts; iron composites; overpotential; vanadium; water oxidation

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(-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.