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2. Heterostructure Co3O4@NiWO4 nanocone arrays with enriched active area for efficient hydrogen evolution reaction

Author

Xiuhua Wang, Peng He, Yuan Yang, Ziyue Jin, Rene Ling, and YaoYao Pan

Subjects
Materials science, Mechanical Engineering, Metals and Alloys, chemistry.chemical_element, Nanotechnology, Heterojunction, 02 engineering and technology, Overpotential, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrocatalyst, 01 natural sciences, Durability, 0104 chemical sciences, Nickel, chemistry, Mechanics of Materials, Materials Chemistry, Hydrogen evolution, 0210 nano-technology
Abstract

Low cost and efficient electrocatalysts are extremely attractive for hydrogen evolution reaction (HER). Here, three-dimensional hybrid Co3O4@NiWO4 nanocone arrays are firstly constructed by a simple and effective strategy on nickel foam. Due to the open space and enriched active areas provided by the special nanocone arrays heterostructure, Co3O4@NiWO4 exhibits excellent HER performance. The overpotential is only 70 mV at 10 mA cm−2, and it also has good durability under alkaline conditions. This research provides a guiding strategy for the synthesis of high-efficiency and stable electrocatalyst for the HER by enriched active areas.

Published
2020

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