Preparation method of sulfur doped Ni-Fe hydroxide nano-film catalyst for decomposing water to produce oxygen

A technology of hydroxide and nano-film, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve the effect of low cost, good catalytic effect and simple method

Inactive Publication Date: 2016-09-28
SHAANXI NORMAL UNIV
View PDF5 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing preparation methods of nickel-iron composite component catalysts mainly include hydrothermal method and sol-gel method, and the research on the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of sulfur doped Ni-Fe hydroxide nano-film catalyst for decomposing water to produce oxygen
  • Preparation method of sulfur doped Ni-Fe hydroxide nano-film catalyst for decomposing water to produce oxygen
  • Preparation method of sulfur doped Ni-Fe hydroxide nano-film catalyst for decomposing water to produce oxygen

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] 1. Mix the following raw materials uniformly to prepare an electrodeposition solution:

[0030]

[0031]

[0032] 2. Take the foamed nickel substrate as the working electrode, the carbon rod as the counter electrode, and the Ag / AgCl electrode (3mol / L KCl) as the reference electrode, put it into the electrodeposition solution prepared in step 1, and deposit by cyclic voltammetry. The scan range is -1.2V to 0.2V, the scan rate is 5mV / s, and the cycle is 25 times to directly deposit sulfur-doped Ni-Fe hydroxide nano-film catalyst on the surface of the foamed nickel substrate. by Figure 1~4 It can be seen that the nano-film deposited on the surface of the foamed nickel contains Ni, Fe, S and O elements, and the XPS spectrum is calibrated by the C 1s (284.8eV) standard, where Ni and Fe are mainly in divalent form, and S is mainly sulfur Urea decomposes to form sulfate and sulfur, which proves that the prepared nano-film is sulfur-doped Ni-Fe hydroxide. From ...

Example Embodiment

[0033] Example 2

[0034] 1. Mix the following raw materials uniformly to prepare an electrodeposition solution:

[0035]

[0036] 2. Take the foamed nickel substrate as the working electrode, the carbon rod as the counter electrode, and the Ag / AgCl electrode (3mol / L KCl) as the reference electrode, put it into the electrodeposition solution prepared in step 1, and deposit by cyclic voltammetry. The scanning range is -1.4~0V, the scanning rate is 10mV / s, and the cycle is 40 times, and the sulfur-doped Ni-Fe hydroxide nano-film catalyst is directly deposited on the surface of the foamed nickel substrate.

Example Embodiment

[0037] Example 3

[0038] 1. Mix the following raw materials uniformly to prepare an electrodeposition solution:

[0039]

[0040]

[0041] 2. Take the foamed nickel substrate as the working electrode, the carbon rod as the counter electrode, and the Ag / AgCl electrode (3mol / L KCl) as the reference electrode, put it into the electrodeposition solution prepared in step 1, and deposit by cyclic voltammetry. The scanning range is -1~0.3V, the scanning rate is 15mV / s, the cycle is 50 times, and the sulfur-doped Ni-Fe hydroxide nano-film catalyst is directly deposited on the surface of the foamed nickel substrate.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of a sulfur doped Ni-Fe hydroxide nano-film catalyst for decomposing water to produce oxygen. According to the method, an aqueous solution which contains NiCl2, FeCl2, thiocarbamide and polyethylene glycol 1,000 is used as electrodeposition liquid, and a sulfur doped Ni-Fe hydroxide nano-film catalyst is directly electro-deposited on the surface of a metal strip or a foam metal substrate by an electrodeposition method. The preparation method is simple, the cost is low, the obtained catalyst is used for catalyzing decomposition of water to produce oxygen, a function of reducing overpotential of oxygen evolution of electrolysed water is good under larger current density, the catalytic activity is high, and the catalyst cannot drop from the surface of the substrate easily.

Description

technical field [0001] The invention belongs to the technical field of preparing oxygen catalytic electrode materials by electrolyzing water, and in particular relates to a preparation method of a sulfur-doped Ni-Fe hydroxide nano-film catalyst for decomposing water to produce oxygen. Background technique [0002] At present, the most effective way to produce oxygen with low cost and high purity is through electrocatalytic or photocatalytic water splitting. Water oxidation reaction is an important reaction to catalyze water splitting, and this step involves four electron transfer processes, which eventually generate oxygen-oxygen bonds. However, the reaction rate is very slow in this reaction process, and it is necessary to use a catalyst to reduce the activation energy and speed up the reaction rate. Industrially, ruthenium oxide or iridium oxide is used as the anode for electrocatalytic water splitting electrodes, but the small reserves and high cost of precious metals li...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C25D9/04C25B1/04C25B11/06B01J27/043
CPCB01J27/043B01J35/065C25B1/04C25D9/04C25B11/075Y02E60/36
Inventor 王增林雷占武
Owner SHAANXI NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap