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Ferro-nickel alloy/carbon electro-catalytic material as well as preparation method and application thereof

An electrocatalytic material, nickel-iron alloy technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of low catalytic activity and overpotential of electrocatalytic total water splitting, and achieve the effect of high activity and good stability

Pending Publication Date: 2022-02-08
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This material can solve the problems of high overpotential and low catalytic activity in electrocatalytic total water splitting.

Method used

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  • Ferro-nickel alloy/carbon electro-catalytic material as well as preparation method and application thereof
  • Ferro-nickel alloy/carbon electro-catalytic material as well as preparation method and application thereof
  • Ferro-nickel alloy/carbon electro-catalytic material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Ni 3 Preparation of Fe-LDH: Weigh 0.6mmolNi(NO 3 ) 2 ·6H 2O, 0.2mmol Fe(NO 3 ) 2 9H 2 O and 2 mmol urea were dissolved in 30 mL deionized water. The homogeneous solution was transferred to an autoclave, heated in an oven at 120 °C for 12 h, and after cooling to room temperature, the sample was collected by centrifugation and washed several times with deionized water and ethanol. Preparation of Ni 3 Fe-LDH.

Embodiment 2

[0033] Preparation of hexagonal nickel-iron alloy / carbon: Ni prepared by methane plasma treatment 3 Fe-LDH: The power is 450W, the processing time is 15min, and the pressure is 25Pa. The Ni prepared in the above steps 3 Transformation of Fe-LDH nanosheets into hexagonal NiFe / carbon porous nanosheets. The resulting product is denoted as hcp-Ni 3 Fe / C.

Embodiment 3

[0035] Preparation of Cubic Phase Inconel / Carbon: Ni Prepared by Methane Plasma Treatment 3 Fe-LDH: The power is 450W, the processing time is 30min, and the pressure is 25Pa. The prepared Ni 3 Fe-LDH nanosheets transform into cubic phase NiFe / carbon porous nanosheets. The resulting product is denoted as fcc-Ni 3 Fe / C.

[0036] figure 1 (a) is the synthetic hcp-Ni of embodiment 2 and 3 3 Fe / C and fcc-Ni 3 Schematic diagram of Fe / C synthesis, (b,c)hcp-Ni 3 TEM and HRTEM images of Fe / C, (d,e)fcc-Ni 3 TEM and HRTEM images of Fe / C. TEM image showing hcp-Ni 3 Fe / C nanosheets consist of a large number of small nanoparticles separated by ultrathin carbon layers. The abundant pores expose abundant active sites, which facilitate the direct contact of the nanocatalysts with the electrolyte, which is beneficial to accelerate the charge transfer and mass diffusion, thereby enhancing the electrocatalytic performance.

[0037] figure 2 Be respectively the hcp-Ni synthesized in E...

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Abstract

The invention relates to a ferro-nickel alloy / carbon electro-catalytic material as well as a preparation method and application thereof, and belongs to the technical field of new energy nano material synthesis and electrochemistry. The electro-catalytic material is of a two-dimensional nanosheet structure formed by loading hexagonal ferro-nickel alloy particles or cubic ferro-nickel alloy particles on carbon. According to the preparation method, Ni3Fe-LDH is treated by using low-temperature plasma to synthesize the hexagonal-phase ferro-nickel alloy / carbon nanosheets or the cubic-phase ferro-nickel alloy / carbon nanosheets. Compared with the prior art, the preparation method disclosed by the invention is simple in process, and the obtained catalytic material is high in activity and good in stability, can be used in the field of electro-catalysis full water splitting and has a good application prospect.

Description

technical field [0001] The invention discloses a nickel-iron alloy / carbon electrocatalytic material, a preparation method and an application thereof, and belongs to the technical field of new energy nano material synthesis and electrochemistry. Background technique [0002] The depletion of fossil fuels and the resulting environmental problems force humans to develop clean and sustainable energy sources. Hydrogen with high energy density plays a key role in achieving carbon neutrality and environmental friendliness, and is considered as an ideal class of renewable energy. Electrochemical water splitting for hydrogen production is a clean and feasible technology compared with the conventional hydrogen production route by reforming coal and natural gas. However, the practical application of the electrocatalytic hydrogen evolution reaction (HER) is still challenging, mainly due to the large overpotential of the entire thermodynamic process caused by the slow kinetics of the fo...

Claims

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Application Information

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IPC IPC(8): C25B11/091C25B1/04
CPCC25B11/091C25B1/04Y02E60/36
Inventor 魏桂涓赵西夏孔凡功
Owner QILU UNIV OF TECH