Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method and application of ni-zn/nitrogen-sulfur double-doped three-dimensional graphene electrode material

A graphene electrode, double doping technology, applied in nanotechnology for materials and surface science, battery electrodes, circuits, etc., can solve problems such as unseen patent applications, and achieve high catalytic activity, low price, and good electrical conductivity. sexual effect

Active Publication Date: 2020-11-24
NORTHEASTERN UNIV LIAONING
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention adopts gas dynamic template method electrodeposition to prepare Ni-Zn / nitrogen-sulfur double-doped three-dimensional graphene composite material as the electrode material of anode electrocatalysis direct hydrazine fuel cell, no patent application has been seen

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
  • A kind of preparation method and application of ni-zn/nitrogen-sulfur double-doped three-dimensional graphene electrode material
  • A kind of preparation method and application of ni-zn/nitrogen-sulfur double-doped three-dimensional graphene electrode material
  • A kind of preparation method and application of ni-zn/nitrogen-sulfur double-doped three-dimensional graphene electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Electrode Fabrication

[0038] The Ni-Zn / nitrogen-sulfur double-doped three-dimensional graphene electrodeposition solution consists of: 1,3-dibromo-5,5-dimethylhydantoin 60g / L, potassium tartrate 30g / L, potassium carbonate 120g / L L, zinc sulfate 80g / L, nickel sulfate 55g / L, add the prepared three-dimensional graphene, ultrasonic for half an hour; foam nickel is used as cathode after alkaline degreasing, pickling (hydrochloric acid: water = 1:1) and water washing , with an inert metal as the anode (Pt sheet), the distance between the anode and cathode is 10cm, the temperature is 60°C, and the current density is 3A / dm 2 , the time is 3min; the obtained Ni-Zn alloy is carried on the graphene, and the surface is uniform.

[0039] The preparation method of nitrogen-sulfur double-doped three-dimensional graphene: add 10mg of maltose into a 100mL autoclave, 30mL of glycerin as a solvent, 10mg of methimazole, and stir at 80°C for 2h, and at 130°C React for 6 hours; after ...

Embodiment 2

[0043] 1. Electrode Fabrication

[0044] The Ni-Zn / nitrogen-sulfur double-doped three-dimensional graphene electrodeposition solution consists of: 5,5-dimethylhydantoin 80g / L, malic acid 60g / L, potassium carbonate 65g / L, zinc sulfate 150g / L , nickel sulfate 100g / L, add the prepared three-dimensional graphene, ultrasonic for half an hour; nickel foam is used as cathode after alkaline degreasing, pickling (hydrochloric acid: water = 1:1) and water washing, and inert metal as anode ( Pt sheet), the distance between cathode and anode is 3cm, the temperature is 40℃, and the current density is 8A / dm 2 , 5min; the obtained Ni-Zn alloy is carried on the graphene, and the surface is uniform.

[0045] Preparation method of nitrogen-sulfur double-doped three-dimensional graphene: Add 15mg polyethylene into a 100mL autoclave, 30mL glycerin as a solvent, 12mg methimazole, stir at 80°C, stir for 1h, and stir at 150°C After cooling down to room temperature, 5mg of magnesium chloride was th...

Embodiment 3

[0049] 1. Electrode Fabrication

[0050] The Ni-Zn / nitrogen-sulfur double-doped three-dimensional graphene electrodeposition solution consists of: hydantoin 115g / L, 1-aminohydantoin 50g / L, malic acid 25g / L, aminoacetic acid 30g / L, carbonic acid Potassium 110g / L, zinc sulfate 100g / L, nickel sulfate 75g / L, add the prepared three-dimensional graphene, ultrasonic for half an hour; foam nickel is degreased by alkali, pickled (hydrochloric acid: water = 1:1) and washed with water The latter is used as the cathode, and the inert metal is used as the anode (Pt sheet), the distance between the cathode and the anode is 15cm, the temperature is 50°C, and the current density is 4A / dm 2 , the time is 4min; the obtained Ni-Zn alloy is carried on the graphene, and the surface is uniform.

[0051] The preparation method of nitrogen-sulfur double-doped three-dimensional graphene: add 12mg of glyceraldehyde into a 100mL autoclave, 35mL of ethanol as a solvent, 10mg of methimazole, stir at 80°C...

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
current densityaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method and application of a Ni-Zn / nitrogen-sulfur double-doped three-dimensional graphene electrode material, and belongs to the field of electrocatalytic oxidation electrode materials. According to the preparation method and application of the Ni-Zn / nitrogen-sulfur double-doped three-dimensional graphene electrode material, the Ni-Zn / nitrogen-sulfur double-doped three-dimensional graphene electrode material is prepared by electrodeposition through a gas dynamic template method to be used as an anode material of a direct hydrazine fuel cell, a nano porous structure is achieved, a hydrophobic surface is formed without bubble agglomeration, and good catalytic activity (low initial potential and high current density), low resistance and good stability areachieved. The low price and excellent performance are achieved, so that good practical application value is achieved.

Description

technical field [0001] The invention belongs to the field of electrocatalytic oxidation electrode materials, and relates to the preparation of a Ni-Zn / nitrogen-sulfur double-doped three-dimensional graphene electrode material and its application in electrocatalytic direct hydrazine fuel cells. Background technique [0002] Hydrazine (N 2 h 4 ·H 2 O) as a clean liquid hydrogen storage fuel, its hydrogen content is as high as 12.5wt.%, better than sodium borohydride (8wt.%), and the same as methanol, so it is considered as an ideal fuel for fuel cells. Due to the high theoretical electromotive force (1.56V) and high energy density (5.42Wh·g- 1 ), the reaction product (N 2 and H 2 O) is non-polluting and can be operated at mild temperature (40-80°C), so it has become a research hotspot. At present, the main problem of direct hydrazine fuel cells is that the electrooxidation reaction of hydrazine on the anode is a kinetically slow process with high overpotential. Therefor...

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): H01M4/90H01M8/1009B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/9041H01M4/9083H01M8/1009Y02E60/50
Inventor 冯忠宝王琳邢鹏飞都兴红李大纲闫姝
Owner NORTHEASTERN UNIV LIAONING