Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 12, Pages 3289-3293Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201611863
Keywords
electrocatalysts; iron composites; overpotential; vanadium; water oxidation
Categories
Funding
- Swedish Energy Agency
- Knut and Alice Wallenberg Foundation
- Swedish Research Council
- National Natural Science Foundation of China [21120102036, 91233201, 21433007, 51320105001]
- National Basic Research Program of China (973 program) [2014CB239402, 2013CB632402]
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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.
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