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

Cobalt-nitrogen co-doped carbon-based electrocatalyst material and preparation method thereof

An electrocatalyst and co-doping technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high catalyst cost, scarcity of precious metals, poor stability, etc., to improve catalytic performance, Improved catalytic activity and low cost

Active Publication Date: 2020-04-14
SHANXI UNIV
View PDF10 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of high cost, precious metal scarcity, and poor stability of existing catalysts, the present invention provides a cobalt-nitrogen co-doped carbon-based electrocatalyst material and a preparation method thereof

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
  • Cobalt-nitrogen co-doped carbon-based electrocatalyst material and preparation method thereof
  • Cobalt-nitrogen co-doped carbon-based electrocatalyst material and preparation method thereof
  • Cobalt-nitrogen co-doped carbon-based electrocatalyst material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This example provides a method for preparing a cobalt-nitrogen co-doped carbon-based electrocatalyst, which is prepared by the following steps:

[0050] (1) Preparation of Co-TPM complex: Soluble cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O) (1mmol) and TPM (2mmol) are dissolved in the acetone solution of 10ml and 20ml respectively, in the process of stirring, the acetone solution containing cobalt salt is slowly added in the acetone solution containing TPM, and the mixture is stirred at room temperature for one hour hours; the precipitate was collected by centrifugation, washed with ethanol, and vacuum-dried at room temperature to obtain a yellow powder, which was the Co-TPM complex;

[0051] (2) Preparation of precursor Co@MOF: 10ml of Zn(NO 3 ) 2 (2.9mmol) of ammonia solution, 10ml of 1H-pyrazole-4-carboxylic acid (H 2 PzC) (3mmol) in methanol and 40ml of Co-TPM (0.4mmol) in DMF were added to a round bottom flask and refluxed for 6h. The precipitate was coll...

Embodiment 2

[0054] This example provides a method for preparing a cobalt-nitrogen co-doped carbon-based electrocatalyst, which is obtained through the following preparation steps:

[0055] (1) Preparation of Co-TPM complex: Soluble cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O) (1mmol) and TPM (2mmol) are dissolved in the acetone solution of 10ml and 20ml respectively, in the process of stirring, the solution containing cobalt salt is slowly added in the solution of TPM, and the mixed solution is stirred at room temperature for one hour; Collect the precipitate, wash with ethanol, and dry at room temperature to obtain a yellow powder, which is the Co-TPM complex;

[0056] (2) Preparation of Co@MOF anionic MOF: 10ml of Zn(NO 3 ) 2 (2.8mmol) of ammonia solution, 10ml of 1H-pyrazole-4-carboxylic acid (H 2 PzC) (3mmol) in methanol and 40ml of Co-TPM (0.5mmol) in DMF were added to a round bottom flask and refluxed for 6h. The precipitate was collected by centrifugation, washed three ti...

Embodiment 3

[0059] This example provides a method for preparing a nitrogen-doped carbon-based electrocatalyst encapsulating cobalt nanoparticles, which is obtained through the following preparation steps:

[0060] (1) Preparation of Co-TPM complex: Soluble cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O) (1mmol) and TPM (2mmol) are dissolved in the acetone solution of 10ml and 20ml respectively, in the process of stirring, the solution containing cobalt salt is slowly added in the solution of TPM, and the mixed solution is stirred at room temperature for one hour; Collect the precipitate, wash with ethanol, and dry in vacuum to obtain a yellow powder, which is the Co-TPM complex;

[0061] (2) Preparation of Co@MOF anionic MOF: 10ml of Zn(NO 3 ) 2 (3.1mmol) of ammonia solution, 10ml of 1H-pyrazole-4-carboxylic acid (H 2 PzC) (3mmol) in methanol and 40ml of Co-TPM (0.2mmol) in DMF were added to a round bottom flask and refluxed for 6h. The precipitate was collected by centrifugation, ...

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 cobalt-nitrogen co-doped carbon-based electrocatalyst material and a preparation method thereof, and belongs to the field of electrochemistry and new energy, wherein the cobalt-nitrogen co-doped carbon-based nano material is prepared by taking an anionic metal organic framework encapsulated with metal cobalt ions as a precursor through a high-temperature pyrolysis methodin a nitrogen atmosphere, and has excellent oxygen reduction, oxygen evolution and hydrogen evolution catalytic performances under an alkaline condition. According to the invention, a rechargeable zinc-air battery and a full water splitting device assembled by utilizing the material have good charging and discharging performance and long-term stability; and the preparation process is simple, and the catalyst is good in performance, economical and capable of being prepared on a large scale.

Description

technical field [0001] The invention belongs to the field of electrochemistry and new energy, and specifically relates to a cobalt-nitrogen co-doped carbon-based electrocatalyst material and a preparation method. Background technique [0002] At present, the world's energy consumption is still dominated by mineral energy such as petroleum, coal, and natural gas. While destroying the ecological environment, it is also facing the severe problem of energy depletion. Energy conservation, emission reduction and energy transformation have become the only way for human sustainable development. It is becoming more and more urgent to seek efficient, green, sustainable and safe energy sources. Metal-air batteries are a new generation of green secondary batteries, which have the advantages of low cost, no pollution, high specific power, and high specific energy. They are rich in resources and can be recycled, so they have good development and application prospects. In metal-air batte...

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): B01J27/24B01J35/00B01J37/08C25B1/04C25B11/06H01M4/88H01M4/90H01M12/06
CPCB01J37/084B01J37/082B01J27/24H01M4/9091H01M4/88H01M12/06C25B1/04C25B11/073B01J35/393B01J35/397B01J35/33Y02E60/36Y02E60/10
Inventor 王俊豪石淼婕张莹张献明
Owner SHANXI UNIV
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