Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Transition metal based catalyst electrode of honeycomb macroporous structure as well as preparation method and application thereof

A transition metal and transition metal salt technology, applied in physical/chemical process catalysts, chemical instruments and methods, battery electrodes, etc., can solve the problems of simple preparation and complex steps that are not suitable for large-area electrodes, and achieve the improvement of effective specific surface area, Easy to maintain, small volume change effect

Active Publication Date: 2017-08-04
SUN YAT SEN UNIV
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the direct preparation of macroporous TMDs and TMPs on conductive substrates to form catalyst electrodes has not been reported yet.
In addition, the synthesis methods of TMDs and TMPs electrocatalysts reported so far are mostly complex steps, which are not suitable for the simple preparation of large-area electrodes.

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
  • Transition metal based catalyst electrode of honeycomb macroporous structure as well as preparation method and application thereof
  • Transition metal based catalyst electrode of honeycomb macroporous structure as well as preparation method and application thereof
  • Transition metal based catalyst electrode of honeycomb macroporous structure as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The invention discloses a honeycomb-shaped macroporous structure transition metal-based catalyst electrode and a preparation method and application thereof. The preparation method of the honeycomb-shaped macroporous structure transition metal-based catalyst electrode includes the following steps:

[0032] S1: Synthetic polystyrene submicron sphere aqueous solution; specifically, polystyrene submicron spheres are prepared by using styrene as the monomer, persulfate as the oxidant, and mixed with a solvent and then heated and reacted. The styrene monomer The volume concentration of the persulfate is 5%-20%, the persulfate is potassium persulfate, and the concentration is 0.2-3mol / L, the solvent is water, and the heating reaction temperature is 70-95°C; The size of styrene submicron spheres is 100-1000 nm.

[0033] S2: Prepare a transition metal salt solution, mix the transition metal salt solution with the polystyrene submicron sphere aqueous solution to obtain a mixed solutio...

Embodiment 1

[0040] Preparation method and application of honeycomb macroporous nickel selenide electrode

[0041] This embodiment discloses a preparation method and application of a honeycomb macroporous nickel selenide electrode. The preparation method includes the following steps:

[0042] S1: Synthesize an aqueous solution of polystyrene submicron spheres with a size of 400 nm. Specifically, 360mL of water and 40mL of styrene monomer were sequentially added to a 500mL flask, and after stirring, potassium persulfate (K 2 S 2 O 7 ), the potassium persulfate concentration was 2.76mmol / L, and the reaction was conducted at 95°C for 24h. After the reaction is over, continue to stir until it cools to room temperature for later use.

[0043] S2: Weigh nickel chloride (NiCl 2 ) And citric acid, dissolved in ethanol to prepare 10mM NiCl 2 And 10mM citric acid in ethanol, which is NiCl 2 Salt solution; press NiCl 2 The volume ratio of salt solution and polystyrene submicron sphere aqueous solution (v / v...

Embodiment 2

[0050] Preparation method and application of honeycomb macroporous nickel selenide electrode

[0051] This embodiment discloses a preparation method and application of a honeycomb macroporous nickel selenide electrode. The preparation method includes the following steps:

[0052] S1: Synthesize an aqueous solution of polystyrene submicron spheres with a size of 600 nm. Specifically, in a 500mL flask, add 350mL of water and 40mL of styrene monomer in sequence, stir well and then add potassium persulfate (K 2 S 2 O 7 ), the potassium persulfate concentration is 1.8mmol / L, and the reaction is carried out at 70°C for 24h. After the reaction is over, continue to stir until it cools to room temperature for later use.

[0053] S2: Weigh nickel nitrate and citric acid in proportion and dissolve them in ethanol together to prepare an ethanol solution of 20 mM nickel nitrate and 15 mM citric acid, that is, nickel nitrate solution; according to nickel nitrate solution and polystyrene The volu...

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
sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a transition metal based catalyst electrode of a honeycomb macroporous structure as well as a preparation method and application thereof. The preparation method disclosed by the invention comprises the following steps: S1, synthesizing a polystyrene sub-microsphere aqueous solution; S2, preparing a transition metal salt solution, mixing the transition metal salt solution and the polystyrene sub-microsphere aqueous solution to obtain a mixed solution, spraying the mixed solution onto a conductive substrate for forming a film, and calcining at a high temperature so as to obtain an oxide film with a honeycomb macroporous structure; and S3, performing sulfidizing or selenizing or phosphating treatment on the oxide film at the high temperature in an inert atmosphere, thereby obtaining the transition metal based catalyst electrode of the honeycomb macroporous structure. The preparation method disclosed by the invention has the advantages that the operation is simple, the macroporous structure of the catalyst is easily maintained, the reproducibility is high, and a large-area electrode is conveniently prepared. Moreover, the catalyst electrode prepared by the invention has high specific surface area and capable of exposing more active sites and can be applied to dye-sensitized solar cells, electrochemical decomposition of water and the like.

Description

Technical field [0001] The invention relates to the field of preparation of electrocatalysts, in particular to a honeycomb-shaped macroporous structure transition metal-based catalyst electrode and a preparation method and application thereof. Background technique [0002] The development of new energy depends on the development and innovation of new materials. Among them, low-cost, high-performance electrocatalyst materials are a research focus of new energy materials. As we all know, noble metal nanomaterials are excellent electrocatalysts, which have high activity for hydrogen production (HER), oxygen production (OER), oxygen reduction reaction (ORR), etc., and have been used in hydrogen production by electrolysis of water, fuel cells, Dye-sensitized solar cells and other fields. However, the expensive price and scarce reserves of precious metals limit their wide application. The development of low-cost alternative electrocatalysts has important theoretical research signifi...

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 Applications(China)
IPC IPC(8): B01J27/057B01J27/185B01J27/04B01J35/04B01J35/10C25B1/04H01M4/90C01G53/11C01G53/00
CPCH01M4/90C25B1/04C01G53/00C01G53/11B01J27/043B01J27/0573B01J27/1853C01P2002/72C01P2004/04B01J35/33B01J35/56B01J35/59B01J35/60Y02E60/36Y02E60/50
Inventor 陈洪燕曹阳王旭东刘庆林滕远匡代彬苏成勇
Owner SUN YAT SEN 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
Eureka Blog
Learn More
PatSnap group products