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

A kind of preparation method of cobalt nitrogen co-doped mesoporous carbon material

A technology of co-doping and mesoporous carbon, applied in carbon preparation/purification, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as scarcity of resources, weak resistance to methanol, and high price

Inactive Publication Date: 2021-05-07
NORTHWEST UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Today, most fuel cells still use platinum-based catalysts, but they are expensive, scarce resources, and high cost. Long-term use is easily affected by the electrolyte to reduce their catalytic activity and weak resistance to methanol. Therefore, other non-precious metal catalysts are used instead of platinum. Catalysts are the focus of current research

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 of cobalt nitrogen co-doped mesoporous carbon material
  • A kind of preparation method of cobalt nitrogen co-doped mesoporous carbon material
  • A kind of preparation method of cobalt nitrogen co-doped mesoporous carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh 1.8g of tannic acid, 1.0g of F127, add water and 20ml of absolute ethanol and ball mill evenly; after ball milling evenly, add 0.72g of cobalt acetate tetrahydrate and continue ball milling until the ball milling is uniform to obtain a gel;

[0026] (2) the gel sample that step (1) obtains is mixed with dicyandiamide mass ratio as 1: 1;

[0027] (3) Place the sample obtained in step (2) in a tube furnace, and in an atmosphere of high-purity argon, the heating rate is 5°C / min, the temperature is raised to 700°C, and the temperature is kept constant for 3 hours to obtain cobalt-nitrogen co-doped Nano mesoporous carbon material, denoted as Co-N / MC-700.

Embodiment 2

[0029] (1) Weigh 1.8g of tannic acid, 1.0g of F127, add water and 20ml of absolute ethanol and ball mill evenly; after ball milling evenly, add 0.72g of cobalt acetate tetrahydrate and continue ball milling until the ball milling is uniform to obtain a gel;

[0030] (2) the gel sample that step (1) obtains is mixed with dicyandiamide mass ratio as 1: 1;

[0031] (3) Place the sample obtained in step (2) in a tube furnace. Under the atmosphere of high-purity argon, the heating rate is 5°C / min, the temperature is raised to 800°C, and the temperature is kept constant for 3 hours to obtain cobalt-nitrogen co-doped Nano mesoporous carbon material, denoted as Co-N / MC-800.

Embodiment 3

[0033] (1) Weigh 1.8g of tannic acid, 1.0g of F127, add water and 20ml of absolute ethanol and ball mill evenly; after ball milling evenly, add 0.72g of cobalt acetate tetrahydrate and continue ball milling until the ball milling is uniform to obtain a gel;

[0034] (2) the gel sample that step (1) obtains is mixed with dicyandiamide mass ratio as 1: 1;

[0035] (3) Place the sample obtained in step (2) in a tube furnace. Under the atmosphere of high-purity argon, the heating rate is 5°C / min, the temperature is raised to 900°C, and the temperature is kept constant for 3 hours to obtain cobalt-nitrogen co-doped Nano mesoporous carbon material, denoted as Co-N / MC-900.

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 cobalt-nitrogen co-doped mesoporous carbon material, comprising the following steps: mixing tannic acid, F127, water and ethanol and putting them into a ball mill for ball milling; The cobalt acetate is further ball-milled to obtain a gel-like mixture; then the precursor is mixed with dicyandiamide, and the obtained mixture is annealed at a high temperature under an inert gas atmosphere to obtain the cobalt-nitrogen co-doped porous carbon material. The compound has a large specific surface area and good stability, and the mesoporous carbon material with high porosity is synthesized in one step by high-temperature roasting under an inert gas. The method has the characteristics of simple device, high output, low cost, etc., and the invention can be widely applied in the fields of energy storage, conversion, catalysis, environmental engineering and the like, and has large-scale commercial application prospects.

Description

technical field [0001] The invention belongs to the technical field of new material preparation and electrochemical catalysis, and in particular relates to a preparation method of a cobalt-nitrogen co-doped mesoporous carbon material. Background technique [0002] In recent years, with the gradual depletion of non-renewable energy such as coal, oil, and natural gas, the development and utilization of sustainable energy is one of the important issues facing the development of human society. Among them, fuel cells and metal-air batteries have the advantages of environmental friendliness, stable performance, and high energy density, and show broad prospects for application in power vehicles, wireless communications, and small power generation devices. However, the cathodic oxygen reduction reaction of fuel cells is the rate-controlling step in the electrocatalytic reaction of fuel cells, so the development of highly active and low-cost oxygen reduction catalysts has become one ...

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): C01B32/05B01J27/24
CPCC01B32/05B01J27/24B01J35/33
Inventor 郭晓辉张雪媛
Owner NORTHWEST UNIV