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NiCoFe alloy multishell hollow spheres with lattice distortion to trigger efficient hydrogen evolution in acidic medium
- Source :
- Sustainable Energy & Fuels. 3:3310-3317
- Publication Year :
- 2019
- Publisher :
- Royal Society of Chemistry (RSC), 2019.
-
Abstract
- Defect engineering or lattice distortion is considered an efficient strategy to enhance the intrinsic activity of an electrocatalyst. Multishell, hollow NiCoFe alloy spheres were prepared with vacancies, gaps or defect, and tilting of an atomic plane with incorporated graphitic carbon derived from the surfactant. The extra gaps or defects in the lattice, which can be verified by high-resolution transmission electron microscope, provide additional active edge sites for the hydrogen evolution reaction. As a result, three-dimensional NiCoFe alloy poses a very low overpotential of 16 mV in 0.5 M H2SO4 for the hydrogen evolution reaction and an unexpectedly small Tafel slope of 38 mV dec−1. This work can therefore broaden horizons and provide a new dimension for the design of new, highly efficient electrocatalysts for hydrogen evolution in an acidic medium.
- Subjects :
- Tafel equation
Materials science
Renewable Energy, Sustainability and the Environment
Alloy
Lattice distortion
Energy Engineering and Power Technology
02 engineering and technology
Overpotential
engineering.material
010402 general chemistry
021001 nanoscience & nanotechnology
Electrocatalyst
01 natural sciences
0104 chemical sciences
Fuel Technology
Transmission electron microscopy
Chemical physics
Lattice (order)
engineering
SPHERES
0210 nano-technology
Subjects
Details
- ISSN :
- 23984902
- Volume :
- 3
- Database :
- OpenAIRE
- Journal :
- Sustainable Energy & Fuels
- Accession number :
- edsair.doi...........97c5703269947954ca40059a597699f0