Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of a gas-conducting and hydrogen-evolving material with a gradually expanding pore structure

A pore structure and hydrogen material technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of high-purity hydrogen collection difficulties, high energy consumption, low efficiency, etc., and achieve excellent space efficiency. Effects on catalytic activity and gas conduction performance

Active Publication Date: 2021-03-26
NORTH CHINA UNIVERSITY OF TECHNOLOGY
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For alkaline water electrolysis hydrogen non-noble metal electrodes, the step of water molecules discharging on the electrode to generate adsorbed hydrogen atoms is the slowest step in the alkaline water electrolysis hydrogen reaction process, and the alkaline water electrolysis hydrogen reaction needs to be driven by a higher overpotential, Therefore, there is a technical bottleneck of high energy consumption and low efficiency in the alkaline water electrolysis hydrogen process
In addition, during the hydrogen precipitation process of alkaline water electrolysis, as the partial pressure of hydrogen increases, due to the uncertainty of the diffusion and transmission direction of hydrogen in the solution, it is easy to mix with the oxygen precipitated at the anode during alkaline water electrolysis, resulting in Difficulties in collecting high-purity hydrogen in alkaline water electrolysis hydrogen process

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 a gas-conducting and hydrogen-evolving material with a gradually expanding pore structure
  • Preparation method of a gas-conducting and hydrogen-evolving material with a gradually expanding pore structure
  • Preparation method of a gas-conducting and hydrogen-evolving material with a gradually expanding pore structure

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] refer to figure 1 , the invention provides a method for preparing a gas-conducting and hydrogen-evolving material with a gradually expanding pore structure, comprising the following steps:

[0030] Step [1] Gradient-step composite electrodeposition of nickel, samarium and terbium with carbon fibers and carbon particles, specifically including the following operations:

[0031] a1. Preparation of composite electrodeposition solution: nickel formate, samarium trifluoromethanesulfonate, terbium nitrate hexahydrate, potassium dodecyl sulfate, carbon particles (5-10 μm in particle size) and carbon fibers (150-200 nm in diameter) , length of 10-30 μm) into deionized water, ultrasonically stirred for 2-6 hours to form a uniform suspension, and then added chloral to complete the preparation of the composite electrodeposition solution, the concentration of nickel formate in the composite electrodeposition solution 180-270g / L, samarium trifluoromethanesulfonate concentration 90-...

Embodiment 1

[0044] Preferred Embodiment 1 of the present invention provides a method for preparing a gas-conducting and hydrogen-evolving material with a gradually expanding pore structure, comprising the following steps:

[0045] Step [1] Gradient-step composite electrodeposition of nickel, samarium and terbium with carbon fibers and carbon particles, specifically including the following operations:

[0046] a1. Preparation of composite electrodeposition solution: nickel formate, samarium trifluoromethanesulfonate, terbium nitrate hexahydrate, potassium dodecyl sulfate, carbon particles (6 μm in particle size) and carbon fibers (180 nm in diameter and 25 μm in length) ) into deionized water, ultrasonically stirred for 4 hours to form a uniform suspension, then added chloral, thereby completing the preparation of the composite electrodeposition solution, the concentration of nickel formate in the composite electrodeposition solution was 200g / L, trifluoromethane The concentration of samari...

Embodiment 2

[0087] The preferred embodiment 2 of the present invention provides a method for preparing a gas-conducting and hydrogen-evolving material with a gradually expanding pore structure, comprising the following steps:

[0088]Step [1] Gradient-step composite electrodeposition of nickel, samarium and terbium with carbon fibers and carbon particles, specifically including the following operations:

[0089] a1. Preparation of composite electrodeposition solution: nickel formate, samarium trifluoromethanesulfonate, terbium nitrate hexahydrate, potassium dodecyl sulfate, carbon particles (6 μm in particle size) and carbon fibers (160 nm in diameter and 12 μm in length) ) into deionized water, ultrasonically stirred for 2 hours to form a uniform suspension, then added chloral, thereby completing the preparation of the composite electrodeposition solution, the concentration of nickel formate in the composite electrodeposition solution was 182g / L, trifluoromethane The concentration of sam...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing a gas-conducting hydrogen evolution material with a gradually expanding pore structure, which includes the following steps: step [1] gradient step composite electrodeposition of nickel, samarium terbium, carbon fiber and carbon particles; step [2] removal of carbon template and oxidation Nickel reduction and samarium terbium element diffusion heat treatment; step [3] nickel samarium terbium alloy bipolar electrodeposition load Sm 2‑x Tb x O 3 / MoSe 2 ; Step [4] remove Se atoms to form nickel samarium terbium alloy to support Sm 2‑x Tb x O 3 / MoSe 2‑x composite materials. The hydrogen evolution material prepared by this method has excellent spatial unidirectional catalytic activity and gas conduction performance for hydrogen evolution from electrolytic alkaline aqueous solutions, and can realize low energy consumption and high efficiency electrolysis hydrogen production from alkaline aqueous solutions and the collection function of high-purity hydrogen.

Description

technical field [0001] The invention relates to the field of hydrogen production materials by electrolysis of alkaline aqueous solution, in particular to a preparation method of a gas-conducting hydrogen evolution material with a gradually expanding pore structure that can be used for the production of hydrogen by electrolysis of alkaline aqueous solution and the collection of high-purity hydrogen. Background technique [0002] Hydrogen energy is not only a green and environmentally friendly high-efficiency energy source, but also can adjust the energy structure and promote industrial transformation. Alkaline water electrolysis hydrogen production is a relatively mature large-scale industrial electrolysis water technology at present. The main process of alkaline water electrolytic hydrogen analysis involves the steps of water molecules discharging at the electrode to generate adsorbed hydrogen atoms, and the adsorbed hydrogen atoms combine to form hydrogen molecules. Desorpti...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B1/04B01J27/057B01J37/34
CPCC25B1/04B01J27/0573B01J37/348B01J35/33Y02E60/36
Inventor 赵明王辉李建国
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com